1113151212 has 36 divisors (see below), whose sum is σ = 2816080176. Its totient is φ = 370749600.

The previous prime is 1113151181. The next prime is 1113151219. The reversal of 1113151212 is 2121513111.

1113151212 is a `hidden beast` number, since 11 + 131 + 512 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1113151219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34953 + ... + 58719.

Almost surely, 2^1113151212 is an apocalyptic number.

1113151212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1113151212 is an abundant number, since it is smaller than the sum of its proper divisors (1702928964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1113151212 is a wasteful number, since it uses less digits than its factorization.

1113151212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25078 (or 25073 counting only the distinct ones).

The product of its digits is 60, while the sum is 18.

The square root of 1113151212 is about 33363.9208127582. The cubic root of 1113151212 is about 1036.3776878562.

Adding to 1113151212 its reverse (2121513111), we get a palindrome (3234664323).

The spelling of 1113151212 in words is "one billion, one hundred thirteen million, one hundred fifty-one thousand, two hundred twelve".