221304343320053 has 12 divisors (see below), whose sum is σ = 257458014120960. Its totient is φ = 189672969121272.

The previous prime is 221304343320043. The next prime is 221304343320077. The reversal of 221304343320053 is 350023343403122.

It is not a de Polignac number, because 221304343320053 - 2⁴ = 221304343320037 is a prime.

It is a super-2 number, since 2×221304343320053² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221304343319995 and 221304343320022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221304343320043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 195477551 + ... + 196606412.

It is an arithmetic number, because the mean of its divisors is an integer number (21454834510080).

Almost surely, 2^{221304343320053} is an apocalyptic number.

It is an amenable number.

221304343320053 is a deficient number, since it is larger than the sum of its proper divisors (36153670800907).

221304343320053 is a wasteful number, since it uses less digits than its factorization.

221304343320053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392095496 (or 392095489 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 35.

Adding to 221304343320053 its reverse (350023343403122), we get a palindrome (571327686723175).

The spelling of 221304343320053 in words is "two hundred twenty-one trillion, three hundred four billion, three hundred forty-three million, three hundred twenty thousand, fifty-three".