1013033313221 has 4 divisors (see below), whose sum is σ = 1015903096332. Its totient is φ = 1010163530112.

The previous prime is 1013033313211. The next prime is 1013033313289. The reversal of 1013033313221 is 1223133303101.

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 621438962596 + 391594350625 = 788314^2 + 625775^2 .

It is a cyclic number.

It is not a de Polignac number, because 1013033313221 - 2¹⁰ = 1013033312197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013033313211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1434891026 + ... + 1434891731.

It is an arithmetic number, because the mean of its divisors is an integer number (253975774083).

Almost surely, 2^{1013033313221} is an apocalyptic number.

It is an amenable number.

1013033313221 is a deficient number, since it is larger than the sum of its proper divisors (2869783111).

1013033313221 is an equidigital number, since it uses as much as digits as its factorization.

1013033313221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2869783110.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1013033313221 its reverse (1223133303101), we get a palindrome (2236166616322).

The spelling of 1013033313221 in words is "one trillion, thirteen billion, thirty-three million, three hundred thirteen thousand, two hundred twenty-one".