213113212356 has 24 divisors (see below), whose sum is σ = 542469995424. Its totient is φ = 64579761280.

The previous prime is 213113212289. The next prime is 213113212357. The reversal of 213113212356 is 653212311312.

It is not an unprimeable number, because it can be changed into a prime (213113212357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 807246885 + ... + 807247148.

It is an arithmetic number, because the mean of its divisors is an integer number (22602916476).

Almost surely, 2^213113212356 is an apocalyptic number.

It is an amenable number.

213113212356 is an abundant number, since it is smaller than the sum of its proper divisors (329356783068).

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

213113212356 is a wasteful number, since it uses less digits than its factorization.

213113212356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614494051 (or 1614494049 counting only the distinct ones).

The product of its digits is 6480, while the sum is 30.

Adding to 213113212356 its reverse (653212311312), we get a palindrome (866325523668).

The spelling of 213113212356 in words is "two hundred thirteen billion, one hundred thirteen million, two hundred twelve thousand, three hundred fifty-six".