221303021220313 has 4 divisors (see below), whose sum is σ = 221401334426128. Its totient is φ = 221204708014500.

The previous prime is 221303021220311. The next prime is 221303021220383. The reversal of 221303021220313 is 313022120303122.

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 221303021220313 - 2¹ = 221303021220311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221303021220311) 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, 49156599531 + ... + 49156604032.

It is an arithmetic number, because the mean of its divisors is an integer number (55350333606532).

Almost surely, 2^{221303021220313} is an apocalyptic number.

It is an amenable number.

221303021220313 is a deficient number, since it is larger than the sum of its proper divisors (98313205815).

221303021220313 is an equidigital number, since it uses as much as digits as its factorization.

221303021220313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98313205814.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 221303021220313 its reverse (313022120303122), we get a palindrome (534325141523435).

The spelling of 221303021220313 in words is "two hundred twenty-one trillion, three hundred three billion, twenty-one million, two hundred twenty thousand, three hundred thirteen".