99020002001 has 4 divisors (see below), whose sum is σ = 99020636400. Its totient is φ = 99019367604.

The previous prime is 99020001989. The next prime is 99020002031. The reversal of 99020002001 is 10020002099.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 99020002001 - 2⁶ = 99020001937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99020002031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98690 + ... + 455828.

It is an arithmetic number, because the mean of its divisors is an integer number (24755159100).

Almost surely, 2^99020002001 is an apocalyptic number.

It is an amenable number.

99020002001 is a deficient number, since it is larger than the sum of its proper divisors (634399).

99020002001 is a wasteful number, since it uses less digits than its factorization.

99020002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634398.

The product of its (nonzero) digits is 324, while the sum is 23.

The spelling of 99020002001 in words is "ninety-nine billion, twenty million, two thousand, one".