99325322521 has 2 divisors, whose sum is σ = 99325322522. Its totient is φ = 99325322520.

The previous prime is 99325322407. The next prime is 99325322531. The reversal of 99325322521 is 12522352399.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85343442496 + 13981880025 = 292136^2 + 118245^2 .

It is a cyclic number.

It is not a de Polignac number, because 99325322521 - 2²³ = 99316933913 is a prime.

It is not a weakly prime, because it can be changed into another prime (99325322531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49662661260 + 49662661261.

It is an arithmetic number, because the mean of its divisors is an integer number (49662661261).

Almost surely, 2^99325322521 is an apocalyptic number.

It is an amenable number.

99325322521 is a deficient number, since it is larger than the sum of its proper divisors (1).

99325322521 is an equidigital number, since it uses as much as digits as its factorization.

99325322521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 291600, while the sum is 43.

The spelling of 99325322521 in words is "ninety-nine billion, three hundred twenty-five million, three hundred twenty-two thousand, five hundred twenty-one".