212212100012 has 96 divisors (see below), whose sum is σ = 426604147200. Its totient is φ = 91427719680.

The previous prime is 212212099999. The next prime is 212212100021. The reversal of 212212100012 is 210001212212.

It is a self number, because there is not a number n which added to its sum of digits gives 212212100012.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61526864 + ... + 61530312.

It is an arithmetic number, because the mean of its divisors is an integer number (4443793200).

Almost surely, 2^212212100012 is an apocalyptic number.

212212100012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212212100012 is an abundant number, since it is smaller than the sum of its proper divisors (214392047188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212212100012 is a wasteful number, since it uses less digits than its factorization.

212212100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4023 (or 4021 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212212100012 its reverse (210001212212), we get a palindrome (422213312224).

The spelling of 212212100012 in words is "two hundred twelve billion, two hundred twelve million, one hundred thousand, twelve".