1131201112 has 16 divisors (see below), whose sum is σ = 2123070840. Its totient is φ = 565048896.

The previous prime is 1131201109. The next prime is 1131201121. The reversal of 1131201112 is 2111021311.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1131201092 and 1131201101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60178 + ... + 76705.

Almost surely, 2^1131201112 is an apocalyptic number.

It is an amenable number.

1131201112 is a deficient number, since it is larger than the sum of its proper divisors (991869728).

1131201112 is a wasteful number, since it uses less digits than its factorization.

1131201112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137922 (or 137918 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1131201112 is about 33633.3333465477. Note that the first 4 decimals coincide. The cubic root of 1131201112 is about 1041.9493493308.

Adding to 1131201112 its reverse (2111021311), we get a palindrome (3242222423).

The spelling of 1131201112 in words is "one billion, one hundred thirty-one million, two hundred one thousand, one hundred twelve".