213156222 has 32 divisors (see below), whose sum is σ = 431101440. Its totient is φ = 70258560.

The previous prime is 213156221. The next prime is 213156247. The reversal of 213156222 is 222651312.

213156222 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 213156192 and 213156201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213156221) 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, 359158 + ... + 359750.

It is an arithmetic number, because the mean of its divisors is an integer number (13471920).

Almost surely, 2^213156222 is an apocalyptic number.

213156222 is an abundant number, since it is smaller than the sum of its proper divisors (217945218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213156222 is a wasteful number, since it uses less digits than its factorization.

213156222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168.

The product of its digits is 1440, while the sum is 24.

The square root of 213156222 is about 14599.8706158651. The cubic root of 213156222 is about 597.3552313495.

The spelling of 213156222 in words is "two hundred thirteen million, one hundred fifty-six thousand, two hundred twenty-two".