12220111031 has 4 divisors (see below), whose sum is σ = 12641494200. Its totient is φ = 11798727864.

The previous prime is 12220111021. The next prime is 12220111051. The reversal of 12220111031 is 13011102221.

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

It is a cyclic number.

It is not a de Polignac number, because 12220111031 - 2¹⁴ = 12220094647 is a prime.

It is a super-2 number, since 2×12220111031² (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 = 12220110997 and 12220111015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220111021) 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, 210691541 + ... + 210691598.

It is an arithmetic number, because the mean of its divisors is an integer number (3160373550).

Almost surely, 2^12220111031 is an apocalyptic number.

12220111031 is a deficient number, since it is larger than the sum of its proper divisors (421383169).

12220111031 is an equidigital number, since it uses as much as digits as its factorization.

12220111031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421383168.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 12220111031 its reverse (13011102221), we get a palindrome (25231213252).

The spelling of 12220111031 in words is "twelve billion, two hundred twenty million, one hundred eleven thousand, thirty-one".