213225570 has 24 divisors (see below), whose sum is σ = 554386716. Its totient is φ = 56860128.

The previous prime is 213225569. The next prime is 213225631. The reversal of 213225570 is 75522312.

It can be written as a sum of positive squares in 2 ways, for example, as 211615209 + 1610361 = 14547^2 + 1269^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1184497 + ... + 1184676.

Almost surely, 2^213225570 is an apocalyptic number.

213225570 is an abundant number, since it is smaller than the sum of its proper divisors (341161146).

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

213225570 is a wasteful number, since it uses less digits than its factorization.

213225570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2369186 (or 2369183 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 213225570 is about 14602.2453752839. The cubic root of 213225570 is about 597.4200052800.

Adding to 213225570 its reverse (75522312), we get a palindrome (288747882).

The spelling of 213225570 in words is "two hundred thirteen million, two hundred twenty-five thousand, five hundred seventy".