99210001 has 16 divisors (see below), whose sum is σ = 114278400. Its totient is φ = 85179600.

The previous prime is 99209989. The next prime is 99210019. The reversal of 99210001 is 10001299.

It is not a de Polignac number, because 99210001 - 2⁵ = 99209969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99210101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99616 + ... + 100606.

It is an arithmetic number, because the mean of its divisors is an integer number (7142400).

Almost surely, 2^99210001 is an apocalyptic number.

It is an amenable number.

99210001 is a deficient number, since it is larger than the sum of its proper divisors (15068399).

99210001 is a wasteful number, since it uses less digits than its factorization.

99210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 99210001 is about 9960.4217280194. The cubic root of 99210001 is about 462.9333669719.

The spelling of 99210001 in words is "ninety-nine million, two hundred ten thousand, one".