99021010121 has 8 divisors (see below), whose sum is σ = 108312530304. Its totient is φ = 89777758320.

The previous prime is 99021010103. The next prime is 99021010133. The reversal of 99021010121 is 12101012099.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99021010121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99021016121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12062801 + ... + 12071006.

It is an arithmetic number, because the mean of its divisors is an integer number (13539066288).

Almost surely, 2^99021010121 is an apocalyptic number.

It is an amenable number.

99021010121 is a deficient number, since it is larger than the sum of its proper divisors (9291520183).

99021010121 is a wasteful number, since it uses less digits than its factorization.

99021010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24134191.

The product of its (nonzero) digits is 324, while the sum is 26.

The spelling of 99021010121 in words is "ninety-nine billion, twenty-one million, ten thousand, one hundred twenty-one".