213111120204 has 30 divisors (see below), whose sum is σ = 557114565084. Its totient is φ = 71037039960.

The previous prime is 213111120197. The next prime is 213111120227. The reversal of 213111120204 is 402021111312.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 328874862 + ... + 328875509.

Almost surely, 2^213111120204 is an apocalyptic number.

It is an amenable number.

213111120204 is an abundant number, since it is smaller than the sum of its proper divisors (344003444880).

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

213111120204 is a wasteful number, since it uses less digits than its factorization.

213111120204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657750387 (or 657750376 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 213111120204 its reverse (402021111312), we get a palindrome (615132231516).

The spelling of 213111120204 in words is "two hundred thirteen billion, one hundred eleven million, one hundred twenty thousand, two hundred four".