21103220000312 has 32 divisors (see below), whose sum is σ = 39919538870400. Its totient is φ = 10458422884224.

The previous prime is 21103220000309. The next prime is 21103220000353. The reversal of 21103220000312 is 21300002230112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25419323 + ... + 26236394.

It is an arithmetic number, because the mean of its divisors is an integer number (1247485589700).

Almost surely, 2^{21103220000312} is an apocalyptic number.

It is an amenable number.

21103220000312 is a deficient number, since it is larger than the sum of its proper divisors (18816318870088).

21103220000312 is a wasteful number, since it uses less digits than its factorization.

21103220000312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51656175 (or 51656171 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21103220000312 its reverse (21300002230112), we get a palindrome (42403222230424).

The spelling of 21103220000312 in words is "twenty-one trillion, one hundred three billion, two hundred twenty million, three hundred twelve", and thus it is an aban number.