99900222001 has 4 divisors (see below), whose sum is σ = 99907099252. Its totient is φ = 99893344752.

The previous prime is 99900221951. The next prime is 99900222013. The reversal of 99900222001 is 10022200999.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7590591376 + 92309630625 = 87124^2 + 303825^2 .

It is a cyclic number.

It is not a de Polignac number, because 99900222001 - 2²⁹ = 99363351089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99900222701) 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, 3416790 + ... + 3445903.

It is an arithmetic number, because the mean of its divisors is an integer number (24976774813).

Almost surely, 2^99900222001 is an apocalyptic number.

It is an amenable number.

99900222001 is a deficient number, since it is larger than the sum of its proper divisors (6877251).

99900222001 is a wasteful number, since it uses less digits than its factorization.

99900222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6877250.

The product of its (nonzero) digits is 5832, while the sum is 34.

The spelling of 99900222001 in words is "ninety-nine billion, nine hundred million, two hundred twenty-two thousand, one".