1131122012 has 12 divisors (see below), whose sum is σ = 1980501096. Its totient is φ = 565264560.

The previous prime is 1131122011. The next prime is 1131122023. The reversal of 1131122012 is 2102211311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131122011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65414 + ... + 80877.

It is an arithmetic number, because the mean of its divisors is an integer number (165041758).

Almost surely, 2^1131122012 is an apocalyptic number.

It is an amenable number.

1131122012 is a deficient number, since it is larger than the sum of its proper divisors (849379084).

1131122012 is a wasteful number, since it uses less digits than its factorization.

1131122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148228 (or 148226 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1131122012 is about 33632.1574092415. The cubic root of 1131122012 is about 1041.9250624279.

Adding to 1131122012 its reverse (2102211311), we get a palindrome (3233333323).

The spelling of 1131122012 in words is "one billion, one hundred thirty-one million, one hundred twenty-two thousand, twelve".