213400122 has 16 divisors (see below), whose sum is σ = 459631200. Its totient is φ = 65661552.

The previous prime is 213400087. The next prime is 213400139. The reversal of 213400122 is 221004312.

213400122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×213400122² = 91079224139229768, which contains 22 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, 1367872 + ... + 1368027.

It is an arithmetic number, because the mean of its divisors is an integer number (28726950).

Almost surely, 2^213400122 is an apocalyptic number.

213400122 is an abundant number, since it is smaller than the sum of its proper divisors (246231078).

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

213400122 is a wasteful number, since it uses less digits than its factorization.

213400122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2735917.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 213400122 is about 14608.2210415916. The cubic root of 213400122 is about 597.5829820031.

Adding to 213400122 its reverse (221004312), we get a palindrome (434404434).

The spelling of 213400122 in words is "two hundred thirteen million, four hundred thousand, one hundred twenty-two".