213221120211331 has 16 divisors (see below), whose sum is σ = 227320095930400. Its totient is φ = 199423206171648.

The previous prime is 213221120211301. The next prime is 213221120211353. The reversal of 213221120211331 is 133112021122312.

It is a cyclic number.

It is not a de Polignac number, because 213221120211331 - 2¹¹ = 213221120209283 is a prime.

It is a super-2 number, since 2×213221120211331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213221120211296 and 213221120211305.

It is not an unprimeable number, because it can be changed into a prime (213221120211301) 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, 185266830 + ... + 186414163.

It is an arithmetic number, because the mean of its divisors is an integer number (14207505995650).

Almost surely, 2^{213221120211331} is an apocalyptic number.

213221120211331 is a deficient number, since it is larger than the sum of its proper divisors (14098975719069).

213221120211331 is a wasteful number, since it uses less digits than its factorization.

213221120211331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371681398.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 213221120211331 its reverse (133112021122312), we get a palindrome (346333141333643).

The spelling of 213221120211331 in words is "two hundred thirteen trillion, two hundred twenty-one billion, one hundred twenty million, two hundred eleven thousand, three hundred thirty-one".