213122210 has 32 divisors (see below), whose sum is σ = 452570112. Its totient is φ = 70712640.

The previous prime is 213122201. The next prime is 213122213. The reversal of 213122210 is 12221312.

It is a happy number.

213122210 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (213122213) 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, 46937 + ... + 51276.

It is an arithmetic number, because the mean of its divisors is an integer number (14142816).

Almost surely, 2^213122210 is an apocalyptic number.

213122210 is an abundant number, since it is smaller than the sum of its proper divisors (239447902).

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

213122210 is a wasteful number, since it uses less digits than its factorization.

213122210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98258.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 213122210 is about 14598.7057645532. The cubic root of 213122210 is about 597.3234575849.

Adding to 213122210 its reverse (12221312), we get a palindrome (225343522).

The spelling of 213122210 in words is "two hundred thirteen million, one hundred twenty-two thousand, two hundred ten".