212356222 has 16 divisors (see below), whose sum is σ = 348853680. Its totient is φ = 96348672.

The previous prime is 212356219. The next prime is 212356301. The reversal of 212356222 is 222653212.

It is a happy number.

212356222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212356222² = 90190330044226568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67683 + ... + 70750.

It is an arithmetic number, because the mean of its divisors is an integer number (21803355).

Almost surely, 2^212356222 is an apocalyptic number.

212356222 is a deficient number, since it is larger than the sum of its proper divisors (136497458).

212356222 is a wasteful number, since it uses less digits than its factorization.

212356222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138507.

The product of its digits is 2880, while the sum is 25.

The square root of 212356222 is about 14572.4473579423. The cubic root of 212356222 is about 596.6069800093.

The spelling of 212356222 in words is "two hundred twelve million, three hundred fifty-six thousand, two hundred twenty-two".