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12020012000000 = 285619115733
BaseRepresentation
bin1010111011101010000010…
…0010111010001100000000
31120120002202022012000221122
42232322200202322030000
53033413441033000000
641321530044411412
72350263050135564
oct256724042721400
946502668160848
1012020012000000
11391472745a684
121421685846b68
136926367094c4
142d7ab37096a4
1515ca04c5c085
hexaeea08ba300

12020012000000 has 252 divisors, whose sum is σ = 30149891576448. Its totient is φ = 4782528000000.

The previous prime is 12020011999999. The next prime is 12020012000047. The reversal of 12020012000000 is 21002021.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 763992134 + ... + 764007866.

Almost surely, 212020012000000 is an apocalyptic number.

12020012000000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12020012000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15074945788224).

12020012000000 is an abundant number, since it is smaller than the sum of its proper divisors (18129879576448).

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

12020012000000 is an frugal number, since it uses more digits than its factorization.

12020012000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15970 (or 15931 counting only the distinct ones).

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

Adding to 12020012000000 its reverse (21002021), we get a palindrome (12020033002021).

The spelling of 12020012000000 in words is "twelve trillion, twenty billion, twelve million", and thus it is an aban number and an uban number.