213222730 has 16 divisors (see below), whose sum is σ = 438629760. Its totient is φ = 73104912.

The previous prime is 213222683. The next prime is 213222787. The reversal of 213222730 is 37222312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1522950 + ... + 1523089.

It is an arithmetic number, because the mean of its divisors is an integer number (27414360).

Almost surely, 2^213222730 is an apocalyptic number.

213222730 is an abundant number, since it is smaller than the sum of its proper divisors (225407030).

213222730 is a wasteful number, since it uses less digits than its factorization.

213222730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3046053.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 213222730 is about 14602.1481296417. The cubic root of 213222730 is about 597.4173528772.

The spelling of 213222730 in words is "two hundred thirteen million, two hundred twenty-two thousand, seven hundred thirty".