223455343072621 has 16 divisors (see below), whose sum is σ = 247349592831168. Its totient is φ = 201847327659120.

The previous prime is 223455343072613. The next prime is 223455343072627. The reversal of 223455343072621 is 126270343554322.

223455343072621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 223455343072621 - 2³ = 223455343072613 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 (223455343072627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 534457615 + ... + 534875548.

It is an arithmetic number, because the mean of its divisors is an integer number (15459349551948).

Almost surely, 2^{223455343072621} is an apocalyptic number.

It is an amenable number.

223455343072621 is a deficient number, since it is larger than the sum of its proper divisors (23894249758547).

223455343072621 is a wasteful number, since it uses less digits than its factorization.

223455343072621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069333353 (or 1069333331 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 49.

The spelling of 223455343072621 in words is "two hundred twenty-three trillion, four hundred fifty-five billion, three hundred forty-three million, seventy-two thousand, six hundred twenty-one".