2221321030231 has 16 divisors (see below), whose sum is σ = 2239785127008. Its totient is φ = 2202939648000.

The previous prime is 2221321030223. The next prime is 2221321030283. The reversal of 2221321030231 is 1320301231222.

It is a cyclic number.

It is not a de Polignac number, because 2221321030231 - 2³ = 2221321030223 is a prime.

It is a super-2 number, since 2×2221321030231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221321070231) 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, 135166191 + ... + 135182623.

It is an arithmetic number, because the mean of its divisors is an integer number (139986570438).

Almost surely, 2^{2221321030231} is an apocalyptic number.

2221321030231 is a deficient number, since it is larger than the sum of its proper divisors (18464096777).

2221321030231 is a wasteful number, since it uses less digits than its factorization.

2221321030231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18882.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 2221321030231 its reverse (1320301231222), we get a palindrome (3541622261453).

The spelling of 2221321030231 in words is "two trillion, two hundred twenty-one billion, three hundred twenty-one million, thirty thousand, two hundred thirty-one".