1131222556 has 12 divisors (see below), whose sum is σ = 1980097168. Its totient is φ = 565480512.

The previous prime is 1131222487. The next prime is 1131222577. The reversal of 1131222556 is 6552221311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11736 + ... + 48991.

Almost surely, 2^1131222556 is an apocalyptic number.

It is an amenable number.

1131222556 is a deficient number, since it is larger than the sum of its proper divisors (848874612).

1131222556 is a wasteful number, since it uses less digits than its factorization.

1131222556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65388 (or 65386 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 1131222556 is about 33633.6521359189. The cubic root of 1131222556 is about 1041.9559333120.

Adding to 1131222556 its reverse (6552221311), we get a palindrome (7683443867).

The spelling of 1131222556 in words is "one billion, one hundred thirty-one million, two hundred twenty-two thousand, five hundred fifty-six".