21113353515310 has 192 divisors, whose sum is σ = 45580082688000. Its totient is φ = 6897294581760.

The previous prime is 21113353515307. The next prime is 21113353515437. The reversal of 21113353515310 is 1351535331112.

It is a super-2 number, since 2×21113353515310² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 18311667694 + ... + 18311668846.

It is an arithmetic number, because the mean of its divisors is an integer number (237396264000).

Almost surely, 2^{21113353515310} is an apocalyptic number.

21113353515310 is an abundant number, since it is smaller than the sum of its proper divisors (24466729172690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21113353515310 is a wasteful number, since it uses less digits than its factorization.

21113353515310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2703 (or 2680 counting only the distinct ones).

The product of its (nonzero) digits is 20250, while the sum is 34.

Adding to 21113353515310 its reverse (1351535331112), we get a palindrome (22464888846422).

The spelling of 21113353515310 in words is "twenty-one trillion, one hundred thirteen billion, three hundred fifty-three million, five hundred fifteen thousand, three hundred ten".