921041800223 has 2 divisors, whose sum is σ = 921041800224. Its totient is φ = 921041800222.

The previous prime is 921041800181. The next prime is 921041800229. The reversal of 921041800223 is 322008140129.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-921041800223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 921041800223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (921041800229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460520900111 + 460520900112.

It is an arithmetic number, because the mean of its divisors is an integer number (460520900112).

Almost surely, 2^921041800223 is an apocalyptic number.

921041800223 is a deficient number, since it is larger than the sum of its proper divisors (1).

921041800223 is an equidigital number, since it uses as much as digits as its factorization.

921041800223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 921041800223 in words is "nine hundred twenty-one billion, forty-one million, eight hundred thousand, two hundred twenty-three".