1013120021312 has 56 divisors (see below), whose sum is σ = 2305095866304. Its totient is φ = 432779922432.

The previous prime is 1013120021299. The next prime is 1013120021323. The reversal of 1013120021312 is 2131200213101.

It is a tau number, because it is divible by the number of its divisors (56).

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, 3545573 + ... + 3820644.

It is an arithmetic number, because the mean of its divisors is an integer number (41162426184).

Almost surely, 2^{1013120021312} is an apocalyptic number.

It is an amenable number.

1013120021312 is an abundant number, since it is smaller than the sum of its proper divisors (1291975844992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1013120021312 is an equidigital number, since it uses as much as digits as its factorization.

1013120021312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7366543 (or 7366533 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1013120021312 its reverse (2131200213101), we get a palindrome (3144320234413).

The spelling of 1013120021312 in words is "one trillion, thirteen billion, one hundred twenty million, twenty-one thousand, three hundred twelve".