21101010098 has 16 divisors (see below), whose sum is σ = 36855673920. Its totient is φ = 8872661616.

The previous prime is 21101010061. The next prime is 21101010137. The reversal of 21101010098 is 89001010112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14218268 + ... + 14219751.

It is an arithmetic number, because the mean of its divisors is an integer number (2303479620).

Almost surely, 2^21101010098 is an apocalyptic number.

21101010098 is a deficient number, since it is larger than the sum of its proper divisors (15754663822).

21101010098 is a wasteful number, since it uses less digits than its factorization.

21101010098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28438081.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 21101010098 in words is "twenty-one billion, one hundred one million, ten thousand, ninety-eight".