213666022 has 16 divisors (see below), whose sum is σ = 328335120. Its totient is φ = 104247808.

The previous prime is 213666017. The next prime is 213666023. The reversal of 213666022 is 220666312.

It is a happy number.

213666022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213666023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9558 + ... + 22774.

It is an arithmetic number, because the mean of its divisors is an integer number (20520945).

Almost surely, 2^213666022 is an apocalyptic number.

213666022 is a deficient number, since it is larger than the sum of its proper divisors (114669098).

213666022 is a wasteful number, since it uses less digits than its factorization.

213666022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13415.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 213666022 is about 14617.3192480701. The cubic root of 213666022 is about 597.8310783379.

The spelling of 213666022 in words is "two hundred thirteen million, six hundred sixty-six thousand, twenty-two".