1111211312012 has 24 divisors (see below), whose sum is σ = 1948102553040. Its totient is φ = 554610899520.

The previous prime is 1111211311993. The next prime is 1111211312053. The reversal of 1111211312012 is 2102131121111.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15307562 + ... + 15379982.

It is an arithmetic number, because the mean of its divisors is an integer number (81170939710).

Almost surely, 2^{1111211312012} is an apocalyptic number.

It is an amenable number.

1111211312012 is a deficient number, since it is larger than the sum of its proper divisors (836891241028).

1111211312012 is a wasteful number, since it uses less digits than its factorization.

1111211312012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79241 (or 79239 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 1111211312012 its reverse (2102131121111), we get a palindrome (3213342433123).

The spelling of 1111211312012 in words is "one trillion, one hundred eleven billion, two hundred eleven million, three hundred twelve thousand, twelve".