21200102000012 has 96 divisors (see below), whose sum is σ = 41007174566400. Its totient is φ = 9530450721792.

The previous prime is 21200101999987. The next prime is 21200102000039. The reversal of 21200102000012 is 21000020100212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21200101999957 and 21200102000002.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164892689 + ... + 165021207.

It is an arithmetic number, because the mean of its divisors is an integer number (427158068400).

Almost surely, 2^{21200102000012} is an apocalyptic number.

It is an amenable number.

21200102000012 is a deficient number, since it is larger than the sum of its proper divisors (19807072566388).

21200102000012 is a wasteful number, since it uses less digits than its factorization.

21200102000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129135 (or 129133 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21200102000012 its reverse (21000020100212), we get a palindrome (42200122100224).

The spelling of 21200102000012 in words is "twenty-one trillion, two hundred billion, one hundred two million, twelve", and thus it is an aban number.