2231123131222 has 4 divisors (see below), whose sum is σ = 3346684696836. Its totient is φ = 1115561565610.

The previous prime is 2231123131219. The next prime is 2231123131231. The reversal of 2231123131222 is 2221313211322.

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

It is a super-3 number, since 3×2231123131222³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557780782804 + ... + 557780782807.

It is an arithmetic number, because the mean of its divisors is an integer number (836671174209).

Almost surely, 2^{2231123131222} is an apocalyptic number.

2231123131222 is a deficient number, since it is larger than the sum of its proper divisors (1115561565614).

2231123131222 is a wasteful number, since it uses less digits than its factorization.

2231123131222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115561565613.

The product of its digits is 1728, while the sum is 25.

Adding to 2231123131222 its reverse (2221313211322), we get a palindrome (4452436342544).

The spelling of 2231123131222 in words is "two trillion, two hundred thirty-one billion, one hundred twenty-three million, one hundred thirty-one thousand, two hundred twenty-two".