2222222221231 has 4 divisors (see below), whose sum is σ = 2225678243992. Its totient is φ = 2218766198472.

The previous prime is 2222222221223. The next prime is 2222222221309. The reversal of 2222222221231 is 1321222222222.

2222222221231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2222222221231 - 2³ = 2222222221223 is a prime.

It is a super-2 number, since 2×2222222221231² (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 = 2222222221196 and 2222222221205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222222231231) 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, 1728010416 + ... + 1728011701.

It is an arithmetic number, because the mean of its divisors is an integer number (556419560998).

Almost surely, 2^{2222222221231} is an apocalyptic number.

2222222221231 is a deficient number, since it is larger than the sum of its proper divisors (3456022761).

2222222221231 is an equidigital number, since it uses as much as digits as its factorization.

2222222221231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3456022760.

The product of its digits is 3072, while the sum is 25.

Adding to 2222222221231 its reverse (1321222222222), we get a palindrome (3543444443453).

Subtracting from 2222222221231 its reverse (1321222222222), we obtain a palindrome (900999999009).

The spelling of 2222222221231 in words is "two trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred thirty-one".