1013112121012 has 24 divisors (see below), whose sum is σ = 1865274997320. Its totient is φ = 480844247040.

The previous prime is 1013112120997. The next prime is 1013112121061. The reversal of 1013112121012 is 2101212113101.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1571012496 + 1011541108516 = 39636^2 + 1005754^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83473837 + ... + 83485972.

It is an arithmetic number, because the mean of its divisors is an integer number (77719791555).

Almost surely, 2^{1013112121012} is an apocalyptic number.

It is an amenable number.

1013112121012 is a deficient number, since it is larger than the sum of its proper divisors (852162876308).

1013112121012 is a wasteful number, since it uses less digits than its factorization.

1013112121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166959891 (or 166959889 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1013112121012 its reverse (2101212113101), we get a palindrome (3114324234113).

The spelling of 1013112121012 in words is "one trillion, thirteen billion, one hundred twelve million, one hundred twenty-one thousand, twelve".