1131320123012 has 12 divisors (see below), whose sum is σ = 2028098269596. Its totient is φ = 551863474560.

The previous prime is 1131320122991. The next prime is 1131320123039. The reversal of 1131320123012 is 2103210231311.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 553318773316 + 578001349696 = 743854^2 + 760264^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3449146553 + ... + 3449146880.

It is an arithmetic number, because the mean of its divisors is an integer number (169008189133).

Almost surely, 2^{1131320123012} is an apocalyptic number.

It is an amenable number.

1131320123012 is a deficient number, since it is larger than the sum of its proper divisors (896778146584).

1131320123012 is a wasteful number, since it uses less digits than its factorization.

1131320123012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6898293478 (or 6898293476 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1131320123012 its reverse (2103210231311), we get a palindrome (3234530354323).

The spelling of 1131320123012 in words is "one trillion, one hundred thirty-one billion, three hundred twenty million, one hundred twenty-three thousand, twelve".