213222351 has 16 divisors (see below), whose sum is σ = 312272640. Its totient is φ = 128810880.

The previous prime is 213222329. The next prime is 213222367. The reversal of 213222351 is 153222312.

It is not a de Polignac number, because 213222351 - 2⁶ = 213222287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213222311) 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, 80010 + ... + 82631.

It is an arithmetic number, because the mean of its divisors is an integer number (19517040).

Almost surely, 2^213222351 is an apocalyptic number.

213222351 is a deficient number, since it is larger than the sum of its proper divisors (99050289).

213222351 is a wasteful number, since it uses less digits than its factorization.

213222351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162686.

The product of its digits is 720, while the sum is 21.

The square root of 213222351 is about 14602.1351520933. The cubic root of 213222351 is about 597.4169989104.

Adding to 213222351 its reverse (153222312), we get a palindrome (366444663).

The spelling of 213222351 in words is "two hundred thirteen million, two hundred twenty-two thousand, three hundred fifty-one".