1122212555 has 12 divisors (see below), whose sum is σ = 1391502816. Its totient is φ = 868806000.

The previous prime is 1122212519. The next prime is 1122212563. The reversal of 1122212555 is 5552122211.

It is a happy number.

It is not a de Polignac number, because 1122212555 - 2²⁴ = 1105435339 is a prime.

It is a super-2 number, since 2×1122212555² = 2518722037199256050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111971 + ... + 121580.

It is an arithmetic number, because the mean of its divisors is an integer number (115958568).

Almost surely, 2^1122212555 is an apocalyptic number.

1122212555 is a deficient number, since it is larger than the sum of its proper divisors (269290261).

1122212555 is an equidigital number, since it uses as much as digits as its factorization.

1122212555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233618 (or 233587 counting only the distinct ones).

The product of its digits is 2000, while the sum is 26.

The square root of 1122212555 is about 33499.4411147410. The cubic root of 1122212555 is about 1039.1822204775.

Adding to 1122212555 its reverse (5552122211), we get a palindrome (6674334766).

The spelling of 1122212555 in words is "one billion, one hundred twenty-two million, two hundred twelve thousand, five hundred fifty-five".