221313022023 has 4 divisors (see below), whose sum is σ = 295084029368. Its totient is φ = 147542014680.

The previous prime is 221313022019. The next prime is 221313022027. The reversal of 221313022023 is 320220313122.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (221313022019) and next prime (221313022027).

It is not a de Polignac number, because 221313022023 - 2² = 221313022019 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 (221313022027) 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, 36885503668 + ... + 36885503673.

It is an arithmetic number, because the mean of its divisors is an integer number (73771007342).

Almost surely, 2^221313022023 is an apocalyptic number.

221313022023 is a deficient number, since it is larger than the sum of its proper divisors (73771007345).

221313022023 is an equidigital number, since it uses as much as digits as its factorization.

221313022023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73771007344.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 221313022023 its reverse (320220313122), we get a palindrome (541533335145).

The spelling of 221313022023 in words is "two hundred twenty-one billion, three hundred thirteen million, twenty-two thousand, twenty-three".