9992021023 has 2 divisors, whose sum is σ = 9992021024. Its totient is φ = 9992021022.

The previous prime is 9992020991. The next prime is 9992021063. The reversal of 9992021023 is 3201202999.

It is a weak prime.

It is an emirp because it is prime and its reverse (3201202999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9992021023 - 2⁵ = 9992020991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9992021063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4996010511 + 4996010512.

It is an arithmetic number, because the mean of its divisors is an integer number (4996010512).

Almost surely, 2^9992021023 is an apocalyptic number.

9992021023 is a deficient number, since it is larger than the sum of its proper divisors (1).

9992021023 is an equidigital number, since it uses as much as digits as its factorization.

9992021023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 9992021023 is about 99960.0971538143. The cubic root of 9992021023 is about 2153.8615314029.

The spelling of 9992021023 in words is "nine billion, nine hundred ninety-two million, twenty-one thousand, twenty-three".