111152222131 has 4 divisors (see below), whose sum is σ = 111154511512. Its totient is φ = 111149932752.

The previous prime is 111152222123. The next prime is 111152222141. The reversal of 111152222131 is 131222251111.

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 111152222131 - 2³ = 111152222123 is a prime.

It is a super-2 number, since 2×111152222131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111152222141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1070250 + ... + 1169503.

It is an arithmetic number, because the mean of its divisors is an integer number (27788627878).

Almost surely, 2^111152222131 is an apocalyptic number.

111152222131 is a deficient number, since it is larger than the sum of its proper divisors (2289381).

111152222131 is an equidigital number, since it uses as much as digits as its factorization.

111152222131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2289380.

The product of its digits is 240, while the sum is 22.

Adding to 111152222131 its reverse (131222251111), we get a palindrome (242374473242).

The spelling of 111152222131 in words is "one hundred eleven billion, one hundred fifty-two million, two hundred twenty-two thousand, one hundred thirty-one".