213213055 has 16 divisors (see below), whose sum is σ = 286661664. Its totient is φ = 150871680.

The previous prime is 213213037. The next prime is 213213089. The reversal of 213213055 is 550312312.

It is not a de Polignac number, because 213213055 - 2⁵ = 213213023 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 50352 + ... + 54421.

It is an arithmetic number, because the mean of its divisors is an integer number (17916354).

Almost surely, 2^213213055 is an apocalyptic number.

213213055 is a deficient number, since it is larger than the sum of its proper divisors (73448609).

213213055 is a wasteful number, since it uses less digits than its factorization.

213213055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104826.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 213213055 is about 14601.8168390101. The cubic root of 213213055 is about 597.4083167856.

Adding to 213213055 its reverse (550312312), we get a palindrome (763525367).

The spelling of 213213055 in words is "two hundred thirteen million, two hundred thirteen thousand, fifty-five".