21001112000012 has 24 divisors (see below), whose sum is σ = 37313791185216. Its totient is φ = 10340140642128.

The previous prime is 21001112000003. The next prime is 21001112000039. The reversal of 21001112000012 is 21000021110012.

It is a junction number, because it is equal to n+sod(n) for n = 21001111999957 and 21001112000002.

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, 13227098 + ... + 14729505.

It is an arithmetic number, because the mean of its divisors is an integer number (1554741299384).

Almost surely, 2^{21001112000012} is an apocalyptic number.

It is an amenable number.

21001112000012 is a deficient number, since it is larger than the sum of its proper divisors (16312679185204).

21001112000012 is a wasteful number, since it uses less digits than its factorization.

21001112000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27959477 (or 27959475 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21001112000012 its reverse (21000021110012), we get a palindrome (42001133110024).

The spelling of 21001112000012 in words is "twenty-one trillion, one billion, one hundred twelve million, twelve", and thus it is an aban number.