212661022 has 16 divisors (see below), whose sum is σ = 365414112. Its totient is φ = 90927360.

The previous prime is 212660989. The next prime is 212661083. The reversal of 212661022 is 220166212.

It is a junction number, because it is equal to n+sod(n) for n = 212660984 and 212661002.

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, 11479 + ... + 23602.

It is an arithmetic number, because the mean of its divisors is an integer number (22838382).

Almost surely, 2^212661022 is an apocalyptic number.

212661022 is a deficient number, since it is larger than the sum of its proper divisors (152753090).

212661022 is a wasteful number, since it uses less digits than its factorization.

212661022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35523.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 212661022 is about 14582.9017002790. The cubic root of 212661022 is about 596.8922850070.

The spelling of 212661022 in words is "two hundred twelve million, six hundred sixty-one thousand, twenty-two".