212257222 has 4 divisors (see below), whose sum is σ = 318385836. Its totient is φ = 106128610.

The previous prime is 212257219. The next prime is 212257229. The reversal of 212257222 is 222752212.

212257222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212257229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53064304 + ... + 53064307.

It is an arithmetic number, because the mean of its divisors is an integer number (79596459).

Almost surely, 2^212257222 is an apocalyptic number.

212257222 is a deficient number, since it is larger than the sum of its proper divisors (106128614).

212257222 is a wasteful number, since it uses less digits than its factorization.

212257222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106128613.

The product of its digits is 2240, while the sum is 25.

The square root of 212257222 is about 14569.0501406234. The cubic root of 212257222 is about 596.5142533143.

The spelling of 212257222 in words is "two hundred twelve million, two hundred fifty-seven thousand, two hundred twenty-two".