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11112012102020 = 225619108206641
BaseRepresentation
bin1010000110110011011110…
…0010001011100110000100
31110100022001020012000202112
42201230313202023212010
52424024400044231040
635344442103400152
72224550006301404
oct241546742134604
943308036160675
1011112012102020
1135a463a162055
1212b56ba453058
13627b2074486b
142a5b77a84804
151440b0255365
hexa1b3788b984

11112012102020 has 24 divisors (see below), whose sum is σ = 23717770095768. Its totient is φ = 4371939187200.

The previous prime is 11112012102017. The next prime is 11112012102043. The reversal of 11112012102020 is 2020121021111.

It can be written as a sum of positive squares in 4 ways, for example, as 314584130884 + 10797427971136 = 560878^2 + 3285944^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11112012101986 and 11112012102004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4554102101 + ... + 4554104540.

It is an arithmetic number, because the mean of its divisors is an integer number (988240420657).

Almost surely, 211112012102020 is an apocalyptic number.

11112012102020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11112012102020 is an abundant number, since it is smaller than the sum of its proper divisors (12605757993748).

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

11112012102020 is a wasteful number, since it uses less digits than its factorization.

11112012102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9108206711 (or 9108206709 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11112012102020 its reverse (2020121021111), we get a palindrome (13132133123131).

The spelling of 11112012102020 in words is "eleven trillion, one hundred twelve billion, twelve million, one hundred two thousand, twenty".

Divisors: 1 2 4 5 10 20 61 122 244 305 610 1220 9108206641 18216413282 36432826564 45541033205 91082066410 182164132820 555600605101 1111201210202 2222402420404 2778003025505 5556006051010 11112012102020