1011231131212 has 12 divisors (see below), whose sum is σ = 1812816784296. Its totient is φ = 493283478560.

The previous prime is 1011231131191. The next prime is 1011231131237. The reversal of 1011231131212 is 2121311321101.

It is a self number, because there is not a number n which added to its sum of digits gives 1011231131212.

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, 3083021578 + ... + 3083021905.

It is an arithmetic number, because the mean of its divisors is an integer number (151068065358).

Almost surely, 2^{1011231131212} is an apocalyptic number.

It is an amenable number.

1011231131212 is a deficient number, since it is larger than the sum of its proper divisors (801585653084).

1011231131212 is a wasteful number, since it uses less digits than its factorization.

1011231131212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6166043528 (or 6166043526 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1011231131212 its reverse (2121311321101), we get a palindrome (3132542452313).

The spelling of 1011231131212 in words is "one trillion, eleven billion, two hundred thirty-one million, one hundred thirty-one thousand, two hundred twelve".