213121111398 has 32 divisors (see below), whose sum is σ = 459382592256. Its totient is φ = 65525368608.

The previous prime is 213121111297. The next prime is 213121111459. The reversal of 213121111398 is 893111121312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 946840 + ... + 1150107.

It is an arithmetic number, because the mean of its divisors is an integer number (14355706008).

Almost surely, 2^213121111398 is an apocalyptic number.

213121111398 is an abundant number, since it is smaller than the sum of its proper divisors (246261480858).

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

213121111398 is a wasteful number, since it uses less digits than its factorization.

213121111398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2098268.

The product of its digits is 2592, while the sum is 33.

The spelling of 213121111398 in words is "two hundred thirteen billion, one hundred twenty-one million, one hundred eleven thousand, three hundred ninety-eight".