21103411123012 has 48 divisors (see below), whose sum is σ = 39991274588160. Its totient is φ = 9714162077312.

The previous prime is 21103411123009. The next prime is 21103411123033. The reversal of 21103411123012 is 21032111430112.

It is a super-2 number, since 2×21103411123012² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11630308 + ... + 13321819.

It is an arithmetic number, because the mean of its divisors is an integer number (833151553920).

Almost surely, 2^{21103411123012} is an apocalyptic number.

It is an amenable number.

21103411123012 is a deficient number, since it is larger than the sum of its proper divisors (18887863465148).

21103411123012 is a wasteful number, since it uses less digits than its factorization.

21103411123012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24952500 (or 24952498 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 21103411123012 its reverse (21032111430112), we get a palindrome (42135522553124).

The spelling of 21103411123012 in words is "twenty-one trillion, one hundred three billion, four hundred eleven million, one hundred twenty-three thousand, twelve".