2221321012331 has 4 divisors (see below), whose sum is σ = 2236031747664. Its totient is φ = 2206610277000.

The previous prime is 2221321012291. The next prime is 2221321012349. The reversal of 2221321012331 is 1332101231222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2221321012331 - 2²⁶ = 2221253903467 is a prime.

It is a super-2 number, since 2×2221321012331² (a number of 25 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 = 2221321012297 and 2221321012306.

It is not an unprimeable number, because it can be changed into a prime (2221321012231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7355367440 + ... + 7355367741.

It is an arithmetic number, because the mean of its divisors is an integer number (559007936916).

Almost surely, 2^{2221321012331} is an apocalyptic number.

2221321012331 is a deficient number, since it is larger than the sum of its proper divisors (14710735333).

2221321012331 is a wasteful number, since it uses less digits than its factorization.

2221321012331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14710735332.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2221321012331 its reverse (1332101231222), we get a palindrome (3553422243553).

The spelling of 2221321012331 in words is "two trillion, two hundred twenty-one billion, three hundred twenty-one million, twelve thousand, three hundred thirty-one".