99020000221 has 16 divisors (see below), whose sum is σ = 105490000000. Its totient is φ = 92680790976.

The previous prime is 99020000213. The next prime is 99020000227. The reversal of 99020000221 is 12200002099.

It is a cyclic number.

It is not a de Polignac number, because 99020000221 - 2³ = 99020000213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99020000227) 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, 654280 + ... + 791278.

It is an arithmetic number, because the mean of its divisors is an integer number (6593125000).

Almost surely, 2^99020000221 is an apocalyptic number.

It is an amenable number.

99020000221 is a deficient number, since it is larger than the sum of its proper divisors (6469999779).

99020000221 is a wasteful number, since it uses less digits than its factorization.

99020000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137476.

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 99020000221 in words is "ninety-nine billion, twenty million, two hundred twenty-one", and thus it is an aban number.