12213232031 has 32 divisors (see below), whose sum is σ = 16426368000. Its totient is φ = 8769646080.

The previous prime is 12213232013. The next prime is 12213232033. The reversal of 12213232031 is 13023231221.

It is not a de Polignac number, because 12213232031 - 2¹⁴ = 12213215647 is a prime.

It is a super-2 number, since 2×12213232031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12213231994 and 12213232012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213232033) 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, 589415 + ... + 609783.

It is an arithmetic number, because the mean of its divisors is an integer number (513324000).

Almost surely, 2^12213232031 is an apocalyptic number.

12213232031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12213232031 is a deficient number, since it is larger than the sum of its proper divisors (4213135969).

12213232031 is a wasteful number, since it uses less digits than its factorization.

12213232031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20999.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12213232031 its reverse (13023231221), we get a palindrome (25236463252).

The spelling of 12213232031 in words is "twelve billion, two hundred thirteen million, two hundred thirty-two thousand, thirty-one".