12220333031 has 4 divisors (see below), whose sum is σ = 12223120464. Its totient is φ = 12217545600.

The previous prime is 12220332977. The next prime is 12220333033. The reversal of 12220333031 is 13033302221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12220333031 is a prime.

It is a super-2 number, since 2×12220333031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12220332994 and 12220333012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220333033) 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, 1387130 + ... + 1395911.

It is an arithmetic number, because the mean of its divisors is an integer number (3055780116).

Almost surely, 2^12220333031 is an apocalyptic number.

12220333031 is a deficient number, since it is larger than the sum of its proper divisors (2787433).

12220333031 is an equidigital number, since it uses as much as digits as its factorization.

12220333031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2787432.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 12220333031 its reverse (13033302221), we get a palindrome (25253635252).

The spelling of 12220333031 in words is "twelve billion, two hundred twenty million, three hundred thirty-three thousand, thirty-one".