21310110223011 has 40 divisors (see below), whose sum is σ = 32081368463760. Its totient is φ = 14096274884352.

The previous prime is 21310110222977. The next prime is 21310110223013. The reversal of 21310110223011 is 11032201101312.

21310110223011 is a `hidden beast` number, since 2 + 1 + 310 + 110 + 2 + 230 + 11 = 666.

It is not a de Polignac number, because 21310110223011 - 2³⁸ = 21035232316067 is a prime.

It is a super-2 number, since 2×21310110223011² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21310110223013) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 22722000 + ... + 23641266.

It is an arithmetic number, because the mean of its divisors is an integer number (802034211594).

Almost surely, 2^{21310110223011} is an apocalyptic number.

21310110223011 is a deficient number, since it is larger than the sum of its proper divisors (10771258240749).

21310110223011 is a wasteful number, since it uses less digits than its factorization.

21310110223011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921505 (or 921496 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 21310110223011 its reverse (11032201101312), we get a palindrome (32342311324323).

The spelling of 21310110223011 in words is "twenty-one trillion, three hundred ten billion, one hundred ten million, two hundred twenty-three thousand, eleven".