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11112012010020 = 2235307603257981
BaseRepresentation
bin1010000110110011011110…
…0001110101001000100100
31110100022001020000100120010
42201230313201311020210
52424024400033310040
635344442101410220
72224550005436235
oct241546741651044
943308036010503
1011112012010020
1135a463a0a9a19
1212b56ba409970
13627b20711a1c
142a5b77a5d08c
151440b0237e80
hexa1b37875224

11112012010020 has 48 divisors (see below), whose sum is σ = 31214981020608. Its totient is φ = 2953551070080.

The previous prime is 11112012009977. The next prime is 11112012010027. The reversal of 11112012010020 is 2001021021111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 11112012009978 and 11112012010005.

It is not an unprimeable number, because it can be changed into a prime (11112012010027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301610571 + ... + 301647410.

It is an arithmetic number, because the mean of its divisors is an integer number (650312104596).

Almost surely, 211112012010020 is an apocalyptic number.

11112012010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11112012010020 is an abundant number, since it is smaller than the sum of its proper divisors (20102969010588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11112012010020 is a wasteful number, since it uses less digits than its factorization.

11112012010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603258300 (or 603258298 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11112012010020 its reverse (2001021021111), we get a palindrome (13113033031131).

The spelling of 11112012010020 in words is "eleven trillion, one hundred twelve billion, twelve million, ten thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 307 614 921 1228 1535 1842 3070 3684 4605 6140 9210 18420 603257981 1206515962 1809773943 2413031924 3016289905 3619547886 6032579810 7239095772 9048869715 12065159620 18097739430 36195478860 185200200167 370400400334 555600600501 740800800668 926001000835 1111201201002 1852002001670 2222402402004 2778003002505 3704004003340 5556006005010 11112012010020