213204522 has 16 divisors (see below), whose sum is σ = 426573792. Its totient is φ = 71040720.

The previous prime is 213204499. The next prime is 213204539. The reversal of 213204522 is 225402312.

It is a super-3 number, since 3×213204522³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15633 + ... + 25899.

It is an arithmetic number, because the mean of its divisors is an integer number (26660862).

Almost surely, 2^213204522 is an apocalyptic number.

213204522 is an abundant number, since it is smaller than the sum of its proper divisors (213369270).

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

213204522 is a wasteful number, since it uses less digits than its factorization.

213204522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13733.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 213204522 is about 14601.5246464196. The cubic root of 213204522 is about 597.4003470529.

Adding to 213204522 its reverse (225402312), we get a palindrome (438606834).

The spelling of 213204522 in words is "two hundred thirteen million, two hundred four thousand, five hundred twenty-two".