212211220012 has 48 divisors (see below), whose sum is σ = 405952015392. Its totient is φ = 96264276480.

The previous prime is 212211220007. The next prime is 212211220049. The reversal of 212211220012 is 210022112212.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74799858 + ... + 74802694.

It is an arithmetic number, because the mean of its divisors is an integer number (8457333654).

Almost surely, 2^212211220012 is an apocalyptic number.

212211220012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212211220012 is a deficient number, since it is larger than the sum of its proper divisors (193740795380).

212211220012 is a wasteful number, since it uses less digits than its factorization.

212211220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5698 (or 5696 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212211220012 its reverse (210022112212), we get a palindrome (422233332224).

It can be divided in two parts, 2122112200 and 12, that added together give a palindrome (2122112212).

The spelling of 212211220012 in words is "two hundred twelve billion, two hundred eleven million, two hundred twenty thousand, twelve".