1112221131 has 32 divisors (see below), whose sum is σ = 1754726400. Its totient is φ = 613211040.

The previous prime is 1112221111. The next prime is 1112221133. The reversal of 1112221131 is 1311222111.

It is not a de Polignac number, because 1112221131 - 2¹⁰ = 1112220107 is a prime.

It is a super-2 number, since 2×1112221131² = 2474071688485838322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1112221131.

It is not an unprimeable number, because it can be changed into a prime (1112221133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231330 + ... + 236088.

It is an arithmetic number, because the mean of its divisors is an integer number (54835200).

Almost surely, 2^1112221131 is an apocalyptic number.

1112221131 is a deficient number, since it is larger than the sum of its proper divisors (642505269).

1112221131 is a wasteful number, since it uses less digits than its factorization.

1112221131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5159.

The product of its digits is 24, while the sum is 15.

The square root of 1112221131 is about 33349.9794752561. The cubic root of 1112221131 is about 1036.0889628463.

Adding to 1112221131 its reverse (1311222111), we get a palindrome (2423443242).

The spelling of 1112221131 in words is "one billion, one hundred twelve million, two hundred twenty-one thousand, one hundred thirty-one".