21110013332131 has 4 divisors (see below), whose sum is σ = 21110335939000. Its totient is φ = 21109690725264.

The previous prime is 21110013332113. The next prime is 21110013332137. The reversal of 21110013332131 is 13123331001112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21110013332131 - 2²⁵ = 21109979777699 is a prime.

It is a super-2 number, since 2×21110013332131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21110013332137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161205261 + ... + 161336158.

It is an arithmetic number, because the mean of its divisors is an integer number (5277583984750).

Almost surely, 2^{21110013332131} is an apocalyptic number.

21110013332131 is a deficient number, since it is larger than the sum of its proper divisors (322606869).

21110013332131 is an equidigital number, since it uses as much as digits as its factorization.

21110013332131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322606868.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 21110013332131 its reverse (13123331001112), we get a palindrome (34233344333243).

The spelling of 21110013332131 in words is "twenty-one trillion, one hundred ten billion, thirteen million, three hundred thirty-two thousand, one hundred thirty-one".