213313220121 has 16 divisors (see below), whose sum is σ = 288660855168. Its totient is φ = 140090496000.

The previous prime is 213313220119. The next prime is 213313220129. The reversal of 213313220121 is 121022313312.

It is not a de Polignac number, because 213313220121 - 2¹ = 213313220119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213313220129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152230 + ... + 670671.

It is an arithmetic number, because the mean of its divisors is an integer number (18041303448).

Almost surely, 2^213313220121 is an apocalyptic number.

It is an amenable number.

213313220121 is a deficient number, since it is larger than the sum of its proper divisors (75347635047).

213313220121 is a wasteful number, since it uses less digits than its factorization.

213313220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824192.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 213313220121 its reverse (121022313312), we get a palindrome (334335533433).

The spelling of 213313220121 in words is "two hundred thirteen billion, three hundred thirteen million, two hundred twenty thousand, one hundred twenty-one".