212312213212 has 24 divisors (see below), whose sum is σ = 406410005232. Its totient is φ = 96246816000.

The previous prime is 212312213153. The next prime is 212312213213.

212312213212 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212312213213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6451789 + ... + 6484612.

It is an arithmetic number, because the mean of its divisors is an integer number (16933750218).

Almost surely, 2^212312213212 is an apocalyptic number.

212312213212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212312213212 is a deficient number, since it is larger than the sum of its proper divisors (194097792020).

212312213212 is a wasteful number, since it uses less digits than its factorization.

212312213212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12936789 (or 12936787 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

It can be divided in two parts, 212312 and 213212, that added together give a palindrome (425524).

The spelling of 212312213212 in words is "two hundred twelve billion, three hundred twelve million, two hundred thirteen thousand, two hundred twelve".