212222079 has 16 divisors (see below), whose sum is σ = 315095040. Its totient is φ = 141170040.

The previous prime is 212222057. The next prime is 212222083. The reversal of 212222079 is 970222212.

212222079 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212222079 - 2¹¹ = 212220031 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212222009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4194 + ... + 21024.

It is an arithmetic number, because the mean of its divisors is an integer number (19693440).

Almost surely, 2^212222079 is an apocalyptic number.

212222079 is a deficient number, since it is larger than the sum of its proper divisors (102872961).

212222079 is a wasteful number, since it uses less digits than its factorization.

212222079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17307 (or 17301 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 212222079 is about 14567.8440065783. The cubic root of 212222079 is about 596.4813302767.

The spelling of 212222079 in words is "two hundred twelve million, two hundred twenty-two thousand, seventy-nine".