21232233111213 has 32 divisors (see below), whose sum is σ = 32471095377920. Its totient is φ = 13697686459440.

The previous prime is 21232233111211. The next prime is 21232233111239. The reversal of 21232233111213 is 31211133223212.

21232233111213 is a `hidden beast` number, since 2 + 1 + 2 + 3 + 223 + 311 + 121 + 3 = 666.

It is not a de Polignac number, because 21232233111213 - 2¹ = 21232233111211 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232233111211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21827556 + ... + 22779522.

It is an arithmetic number, because the mean of its divisors is an integer number (1014721730560).

Almost surely, 2^{21232233111213} is an apocalyptic number.

It is an amenable number.

21232233111213 is a deficient number, since it is larger than the sum of its proper divisors (11238862266707).

21232233111213 is a wasteful number, since it uses less digits than its factorization.

21232233111213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978654 (or 978648 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

Adding to 21232233111213 its reverse (31211133223212), we get a palindrome (52443366334425).

The spelling of 21232233111213 in words is "twenty-one trillion, two hundred thirty-two billion, two hundred thirty-three million, one hundred eleven thousand, two hundred thirteen".