213120333212 has 24 divisors (see below), whose sum is σ = 389560612896. Its totient is φ = 101826452288.

The previous prime is 213120333149. The next prime is 213120333271. The reversal of 213120333212 is 212333021312.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

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, 1050203 + ... + 1236594.

It is an arithmetic number, because the mean of its divisors is an integer number (16231692204).

Almost surely, 2^213120333212 is an apocalyptic number.

It is an amenable number.

213120333212 is a deficient number, since it is larger than the sum of its proper divisors (176440279684).

213120333212 is a wasteful number, since it uses less digits than its factorization.

213120333212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2287837 (or 2287835 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 213120333212 its reverse (212333021312), we get a palindrome (425453354524).

The spelling of 213120333212 in words is "two hundred thirteen billion, one hundred twenty million, three hundred thirty-three thousand, two hundred twelve".