212220110031 has 16 divisors (see below), whose sum is σ = 293224455168. Its totient is φ = 136383436800.

The previous prime is 212220110021. The next prime is 212220110051. The reversal of 212220110031 is 130011022212.

It is not a de Polignac number, because 212220110031 - 2⁵ = 212220109999 is a prime.

It is a super-2 number, since 2×212220110031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212220110021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4415665 + ... + 4463466.

It is an arithmetic number, because the mean of its divisors is an integer number (18326528448).

Almost surely, 2^212220110031 is an apocalyptic number.

212220110031 is a deficient number, since it is larger than the sum of its proper divisors (81004345137).

212220110031 is a wasteful number, since it uses less digits than its factorization.

212220110031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8879422.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 212220110031 its reverse (130011022212), we get a palindrome (342231132243).

The spelling of 212220110031 in words is "two hundred twelve billion, two hundred twenty million, one hundred ten thousand, thirty-one".