1002303311221 has 4 divisors (see below), whose sum is σ = 1002780828000. Its totient is φ = 1001825794444.

The previous prime is 1002303311179. The next prime is 1002303311231. The reversal of 1002303311221 is 1221133032001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1002303311221 - 2²¹ = 1002301214069 is a prime.

It is a super-2 number, since 2×1002303311221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002303311231) 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, 238755241 + ... + 238759438.

It is an arithmetic number, because the mean of its divisors is an integer number (250695207000).

Almost surely, 2^{1002303311221} is an apocalyptic number.

It is an amenable number.

1002303311221 is a deficient number, since it is larger than the sum of its proper divisors (477516779).

1002303311221 is an equidigital number, since it uses as much as digits as its factorization.

1002303311221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477516778.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1002303311221 its reverse (1221133032001), we get a palindrome (2223436343222).

The spelling of 1002303311221 in words is "one trillion, two billion, three hundred three million, three hundred eleven thousand, two hundred twenty-one".