213120102204 has 18 divisors (see below), whose sum is σ = 538720258440. Its totient is φ = 71040034056.

The previous prime is 213120102203. The next prime is 213120102263. The reversal of 213120102204 is 402201021312.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213120102203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2960001384 + ... + 2960001455.

Almost surely, 2^213120102204 is an apocalyptic number.

It is an amenable number.

213120102204 is an abundant number, since it is smaller than the sum of its proper divisors (325600156236).

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

213120102204 is a wasteful number, since it uses less digits than its factorization.

213120102204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5920002849 (or 5920002844 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 213120102204 its reverse (402201021312), we get a palindrome (615321123516).

The spelling of 213120102204 in words is "two hundred thirteen billion, one hundred twenty million, one hundred two thousand, two hundred four".