21098373120 has 672 divisors, whose sum is σ = 82315531584. Its totient is φ = 4995809280.

The previous prime is 21098373061. The next prime is 21098373157. The reversal of 21098373120 is 2137389012.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 490659819 + ... + 490659861.

Almost surely, 2^21098373120 is an apocalyptic number.

21098373120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21098373120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41157765792).

21098373120 is an abundant number, since it is smaller than the sum of its proper divisors (61217158464).

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

21098373120 is an equidigital number, since it uses as much as digits as its factorization.

21098373120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The spelling of 21098373120 in words is "twenty-one billion, ninety-eight million, three hundred seventy-three thousand, one hundred twenty".