1222125231 has 16 divisors (see below), whose sum is σ = 1668487040. Its totient is φ = 795281760.

The previous prime is 1222125199. The next prime is 1222125241. The reversal of 1222125231 is 1325212221.

It is not a de Polignac number, because 1222125231 - 2⁵ = 1222125199 is a prime.

It is a super-2 number, since 2×1222125231² = 2987180160493606722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222125198 and 1222125207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222125241) 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, 350565 + ... + 354033.

It is an arithmetic number, because the mean of its divisors is an integer number (104280440).

Almost surely, 2^1222125231 is an apocalyptic number.

1222125231 is a deficient number, since it is larger than the sum of its proper divisors (446361809).

1222125231 is a wasteful number, since it uses less digits than its factorization.

1222125231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6246.

The product of its digits is 480, while the sum is 21.

The square root of 1222125231 is about 34958.9077489558. The cubic root of 1222125231 is about 1069.1498271891.

Adding to 1222125231 its reverse (1325212221), we get a palindrome (2547337452).

The spelling of 1222125231 in words is "one billion, two hundred twenty-two million, one hundred twenty-five thousand, two hundred thirty-one".