1131031222012 has 24 divisors (see below), whose sum is σ = 1985681663280. Its totient is φ = 563693844480.

The previous prime is 1131031221979. The next prime is 1131031222033. The reversal of 1131031222012 is 2102221301311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35854687 + ... + 35886217.

It is an arithmetic number, because the mean of its divisors is an integer number (82736735970).

Almost surely, 2^{1131031222012} is an apocalyptic number.

It is an amenable number.

1131031222012 is a deficient number, since it is larger than the sum of its proper divisors (854650441268).

1131031222012 is a wasteful number, since it uses less digits than its factorization.

1131031222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60141 (or 60139 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1131031222012 its reverse (2102221301311), we get a palindrome (3233252523323).

The spelling of 1131031222012 in words is "one trillion, one hundred thirty-one billion, thirty-one million, two hundred twenty-two thousand, twelve".