98020010021 has 4 divisors (see below), whose sum is σ = 98887443852. Its totient is φ = 97152576192.

The previous prime is 98020010009. The next prime is 98020010093. The reversal of 98020010021 is 12001002089.

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 4252996225 + 93767013796 = 65215^2 + 306214^2 .

It is a cyclic number.

It is not a de Polignac number, because 98020010021 - 2⁶ = 98020009957 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 (98020019021) 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, 433716746 + ... + 433716971.

It is an arithmetic number, because the mean of its divisors is an integer number (24721860963).

Almost surely, 2^98020010021 is an apocalyptic number.

It is an amenable number.

98020010021 is a deficient number, since it is larger than the sum of its proper divisors (867433831).

98020010021 is a wasteful number, since it uses less digits than its factorization.

98020010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867433830.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 98020010021 in words is "ninety-eight billion, twenty million, ten thousand, twenty-one".