21021010098 has 32 divisors (see below), whose sum is σ = 46839859200. Its totient is φ = 6234470160.

The previous prime is 21021010079. The next prime is 21021010121. The reversal of 21021010098 is 89001012012.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3385198 + ... + 3391401.

It is an arithmetic number, because the mean of its divisors is an integer number (1463745600).

Almost surely, 2^21021010098 is an apocalyptic number.

21021010098 is an abundant number, since it is smaller than the sum of its proper divisors (25818849102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21021010098 is a wasteful number, since it uses less digits than its factorization.

21021010098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6776662.

The product of its (nonzero) digits is 288, while the sum is 24.

The spelling of 21021010098 in words is "twenty-one billion, twenty-one million, ten thousand, ninety-eight".