213121302230 has 64 divisors (see below), whose sum is σ = 409834432512. Its totient is φ = 79514265600.

The previous prime is 213121302221. The next prime is 213121302257. The reversal of 213121302230 is 32203121312.

It is a super-2 number, since 2×213121302230² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21520280 + ... + 21530180.

It is an arithmetic number, because the mean of its divisors is an integer number (6403663008).

Almost surely, 2^213121302230 is an apocalyptic number.

213121302230 is a deficient number, since it is larger than the sum of its proper divisors (196713130282).

213121302230 is a wasteful number, since it uses less digits than its factorization.

213121302230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11049.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 213121302230 its reverse (32203121312), we get a palindrome (245324423542).

The spelling of 213121302230 in words is "two hundred thirteen billion, one hundred twenty-one million, three hundred two thousand, two hundred thirty".