213122054215 has 16 divisors (see below), whose sum is σ = 292324008960. Its totient is φ = 146119669920.

The previous prime is 213122054207. The next prime is 213122054227. The reversal of 213122054215 is 512450221312.

It is a happy number.

It is not a de Polignac number, because 213122054215 - 2³ = 213122054207 is a prime.

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, 193941 + ... + 681070.

It is an arithmetic number, because the mean of its divisors is an integer number (18270250560).

Almost surely, 2^213122054215 is an apocalyptic number.

213122054215 is a deficient number, since it is larger than the sum of its proper divisors (79201954745).

213122054215 is an equidigital number, since it uses as much as digits as its factorization.

213122054215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881982.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 213122054215 its reverse (512450221312), we get a palindrome (725572275527).

The spelling of 213122054215 in words is "two hundred thirteen billion, one hundred twenty-two million, fifty-four thousand, two hundred fifteen".