21232103331123 has 10 divisors (see below), whose sum is σ = 31717092630564. Its totient is φ = 14154735554028.

The previous prime is 21232103331113. The next prime is 21232103331149. The reversal of 21232103331123 is 32113330123212.

21232103331123 is a `hidden beast` number, since 2 + 1 + 2 + 3 + 210 + 333 + 112 + 3 = 666.

It is not a de Polignac number, because 21232103331123 - 2⁶ = 21232103331059 is a prime.

It is a super-2 number, since 2×21232103331123² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (21232103331113) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 131062366161 + ... + 131062366322.

Almost surely, 2^{21232103331123} is an apocalyptic number.

21232103331123 is a deficient number, since it is larger than the sum of its proper divisors (10484989299441).

21232103331123 is an equidigital number, since it uses as much as digits as its factorization.

21232103331123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262124732495 (or 262124732486 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 21232103331123 its reverse (32113330123212), we get a palindrome (53345433454335).

The spelling of 21232103331123 in words is "twenty-one trillion, two hundred thirty-two billion, one hundred three million, three hundred thirty-one thousand, one hundred twenty-three".