99722771 has 4 divisors (see below), whose sum is σ = 99919200. Its totient is φ = 99526344.

The previous prime is 99722761. The next prime is 99722863. The reversal of 99722771 is 17722799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17722799 = 29 ⋅611131.

It is a cyclic number.

It is not a de Polignac number, because 99722771 - 2²² = 95528467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99722741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97451 + ... + 98468.

It is an arithmetic number, because the mean of its divisors is an integer number (24979800).

Almost surely, 2^99722771 is an apocalyptic number.

99722771 is a deficient number, since it is larger than the sum of its proper divisors (196429).

99722771 is a wasteful number, since it uses less digits than its factorization.

99722771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196428.

The product of its digits is 111132, while the sum is 44.

The square root of 99722771 is about 9986.1289296704. The cubic root of 99722771 is about 463.7295587021.

The spelling of 99722771 in words is "ninety-nine million, seven hundred twenty-two thousand, seven hundred seventy-one".