1122155131 has 4 divisors (see below), whose sum is σ = 1123242472. Its totient is φ = 1121067792.

The previous prime is 1122155123. The next prime is 1122155137. The reversal of 1122155131 is 1315512211.

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

It is a cyclic number.

It is not a de Polignac number, because 1122155131 - 2³ = 1122155123 is a prime.

It is a super-2 number, since 2×1122155131² = 2518464276059254322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122155137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 542121 + ... + 544186.

It is an arithmetic number, because the mean of its divisors is an integer number (280810618).

Almost surely, 2^1122155131 is an apocalyptic number.

1122155131 is a deficient number, since it is larger than the sum of its proper divisors (1087341).

1122155131 is a wasteful number, since it uses less digits than its factorization.

1122155131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087340.

The product of its digits is 300, while the sum is 22.

The square root of 1122155131 is about 33498.5840148505. The cubic root of 1122155131 is about 1039.1644950720.

Adding to 1122155131 its reverse (1315512211), we get a palindrome (2437667342).

The spelling of 1122155131 in words is "one billion, one hundred twenty-two million, one hundred fifty-five thousand, one hundred thirty-one".