212212999955 has 16 divisors (see below), whose sum is σ = 280402435584. Its totient is φ = 152894323680.

The previous prime is 212212999939. The next prime is 212212999961. The reversal of 212212999955 is 559999212212.

It is a happy number.

It is not a de Polignac number, because 212212999955 - 2⁴ = 212212999939 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212212999955.

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, 18024107 + ... + 18035876.

It is an arithmetic number, because the mean of its divisors is an integer number (17525152224).

Almost surely, 2^212212999955 is an apocalyptic number.

212212999955 is a deficient number, since it is larger than the sum of its proper divisors (68189435629).

212212999955 is a wasteful number, since it uses less digits than its factorization.

212212999955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36060106.

The product of its digits is 2624400, while the sum is 56.

The spelling of 212212999955 in words is "two hundred twelve billion, two hundred twelve million, nine hundred ninety-nine thousand, nine hundred fifty-five".