213222210 has 32 divisors (see below), whose sum is σ = 529381440. Its totient is φ = 54898368.

The previous prime is 213222197. The next prime is 213222223. The reversal of 213222210 is 12222312.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (213222197) and next prime (213222223).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 213222210.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121672 + ... + 123411.

It is an arithmetic number, because the mean of its divisors is an integer number (16543170).

Almost surely, 2^213222210 is an apocalyptic number.

213222210 is an abundant number, since it is smaller than the sum of its proper divisors (316159230).

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

213222210 is a wasteful number, since it uses less digits than its factorization.

213222210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245122.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 213222210 is about 14602.1303240315. The cubic root of 213222210 is about 597.4168672234.

Adding to 213222210 its reverse (12222312), we get a palindrome (225444522).

It can be divided in two parts, 21322 and 2210, that added together give a palindrome (23532).

The spelling of 213222210 in words is "two hundred thirteen million, two hundred twenty-two thousand, two hundred ten".