32231221213 has 6 divisors (see below), whose sum is σ = 34238702426. Its totient is φ = 30335266752.

The previous prime is 32231221181. The next prime is 32231221237. The reversal of 32231221213 is 31212213223.

It can be written as a sum of positive squares in 3 ways, for example, as 12165648804 + 20065572409 = 110298^2 + 141653^2 .

It is not a de Polignac number, because 32231221213 - 2⁵ = 32231221181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32231281213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55763070 + ... + 55763647.

Almost surely, 2^32231221213 is an apocalyptic number.

It is an amenable number.

32231221213 is a deficient number, since it is larger than the sum of its proper divisors (2007481213).

32231221213 is a wasteful number, since it uses less digits than its factorization.

32231221213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111526751 (or 111526734 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

Adding to 32231221213 its reverse (31212213223), we get a palindrome (63443434436).

The spelling of 32231221213 in words is "thirty-two billion, two hundred thirty-one million, two hundred twenty-one thousand, two hundred thirteen".