1111213111012 has 24 divisors (see below), whose sum is σ = 1957255776504. Its totient is φ = 551998067712.

The previous prime is 1111213110991. The next prime is 1111213111027. The reversal of 1111213111012 is 2101113121111.

It can be written as a sum of positive squares in 4 ways, for example, as 16377344676 + 1094835766336 = 127974^2 + 1046344^2 .

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, 5065428 + ... + 5280244.

It is an arithmetic number, because the mean of its divisors is an integer number (81552324021).

Almost surely, 2^{1111213111012} is an apocalyptic number.

It is an amenable number.

1111213111012 is a deficient number, since it is larger than the sum of its proper divisors (846042665492).

1111213111012 is a wasteful number, since it uses less digits than its factorization.

1111213111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223215 (or 223213 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 16.

Adding to 1111213111012 its reverse (2101113121111), we get a palindrome (3212326232123).

The spelling of 1111213111012 in words is "one trillion, one hundred eleven billion, two hundred thirteen million, one hundred eleven thousand, twelve".