212222202222222 has 32 divisors (see below), whose sum is σ = 471605800296960. Its totient is φ = 70740598103640.

The previous prime is 212222202222211. The next prime is 212222202222241. The reversal of 212222202222222 is 222222202222212.

212222202222222 is a `hidden beast` number, since 2 + 12 + 2 + 2 + 2 + 202 + 222 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent 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, 26857003 + ... + 33848825.

It is an arithmetic number, because the mean of its divisors is an integer number (14737681259280).

Almost surely, 2^{212222202222222} is an apocalyptic number.

212222202222222 is an abundant number, since it is smaller than the sum of its proper divisors (259383598074738).

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

212222202222222 is a wasteful number, since it uses less digits than its factorization.

212222202222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7553925 (or 7553919 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

Adding to 212222202222222 its reverse (222222202222212), we get a palindrome (434444404444434).

The spelling of 212222202222222 in words is "two hundred twelve trillion, two hundred twenty-two billion, two hundred two million, two hundred twenty-two thousand, two hundred twenty-two".