921228422423 has 2 divisors, whose sum is σ = 921228422424. Its totient is φ = 921228422422.

The previous prime is 921228422393. The next prime is 921228422437. The reversal of 921228422423 is 324224822129.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 921228422423 - 2⁸ = 921228422167 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (921228422923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460614211211 + 460614211212.

It is an arithmetic number, because the mean of its divisors is an integer number (460614211212).

Almost surely, 2^921228422423 is an apocalyptic number.

921228422423 is a deficient number, since it is larger than the sum of its proper divisors (1).

921228422423 is an equidigital number, since it uses as much as digits as its factorization.

921228422423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 221184, while the sum is 41.

The spelling of 921228422423 in words is "nine hundred twenty-one billion, two hundred twenty-eight million, four hundred twenty-two thousand, four hundred twenty-three".