21101035313504 has 96 divisors (see below), whose sum is σ = 41745771809280. Its totient is φ = 10499111539200.

The previous prime is 21101035313497. The next prime is 21101035313549. The reversal of 21101035313504 is 40531353010112.

It is a congruent number.

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, 13854914087 + ... + 13854915609.

It is an arithmetic number, because the mean of its divisors is an integer number (434851789680).

Almost surely, 2^{21101035313504} is an apocalyptic number.

It is an amenable number.

21101035313504 is a deficient number, since it is larger than the sum of its proper divisors (20644736495776).

21101035313504 is a wasteful number, since it uses less digits than its factorization.

21101035313504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3964 (or 3956 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 21101035313504 its reverse (40531353010112), we get a palindrome (61632388323616).

The spelling of 21101035313504 in words is "twenty-one trillion, one hundred one billion, thirty-five million, three hundred thirteen thousand, five hundred four".