1222232553 has 12 divisors (see below), whose sum is σ = 1790313408. Its totient is φ = 803344920.

The previous prime is 1222232549. The next prime is 1222232563. The reversal of 1222232553 is 3552322221.

It is not a de Polignac number, because 1222232553 - 2² = 1222232549 is a prime.

It is a super-2 number, since 2×1222232553² = 2987704827225795618, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1222232563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 955725 + ... + 957002.

It is an arithmetic number, because the mean of its divisors is an integer number (149192784).

Almost surely, 2^1222232553 is an apocalyptic number.

It is an amenable number.

1222232553 is a deficient number, since it is larger than the sum of its proper divisors (568080855).

1222232553 is a wasteful number, since it uses less digits than its factorization.

1222232553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912804 (or 1912801 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 1222232553 is about 34960.4426888448. The cubic root of 1222232553 is about 1069.1811223832.

Adding to 1222232553 its reverse (3552322221), we get a palindrome (4774554774).

The spelling of 1222232553 in words is "one billion, two hundred twenty-two million, two hundred thirty-two thousand, five hundred fifty-three".