21103000100012 has 48 divisors (see below), whose sum is σ = 37216260329472. Its totient is φ = 10470141777600.

The previous prime is 21103000099981. The next prime is 21103000100099. The reversal of 21103000100012 is 21000100030112.

It is a super-2 number, since 2×21103000100012² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21103000099966 and 21103000100002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370518137 + ... + 370575087.

It is an arithmetic number, because the mean of its divisors is an integer number (775338756864).

Almost surely, 2^{21103000100012} is an apocalyptic number.

It is an amenable number.

21103000100012 is a deficient number, since it is larger than the sum of its proper divisors (16113260229460).

21103000100012 is a wasteful number, since it uses less digits than its factorization.

21103000100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58518 (or 58516 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 21103000100012 its reverse (21000100030112), we get a palindrome (42103100130124).

The spelling of 21103000100012 in words is "twenty-one trillion, one hundred three billion, one hundred thousand, twelve".