1013120113021 has 4 divisors (see below), whose sum is σ = 1022085777852. Its totient is φ = 1004154448192.

The previous prime is 1013120113007. The next prime is 1013120113037. The reversal of 1013120113021 is 1203110213101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 130010724900 + 883109388121 = 360570^2 + 939739^2 .

It is a cyclic number.

It is not a de Polignac number, because 1013120113021 - 2⁹ = 1013120112509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1013120112986 and 1013120113004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013120113121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4482832246 + ... + 4482832471.

It is an arithmetic number, because the mean of its divisors is an integer number (255521444463).

Almost surely, 2^{1013120113021} is an apocalyptic number.

It is an amenable number.

1013120113021 is a deficient number, since it is larger than the sum of its proper divisors (8965664831).

1013120113021 is an equidigital number, since it uses as much as digits as its factorization.

1013120113021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8965664830.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1013120113021 its reverse (1203110213101), we get a palindrome (2216230326122).

The spelling of 1013120113021 in words is "one trillion, thirteen billion, one hundred twenty million, one hundred thirteen thousand, twenty-one".