21010120100198 has 8 divisors (see below), whose sum is σ = 31697348822208. Its totient is φ = 10444337159464.

The previous prime is 21010120100197. The next prime is 21010120100273. The reversal of 21010120100198 is 89100102101012.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010120100197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30361444886 + ... + 30361445577.

It is an arithmetic number, because the mean of its divisors is an integer number (3962168602776).

Almost surely, 2^{21010120100198} is an apocalyptic number.

21010120100198 is a deficient number, since it is larger than the sum of its proper divisors (10687228722010).

21010120100198 is a wasteful number, since it uses less digits than its factorization.

21010120100198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60722890638.

The product of its (nonzero) digits is 288, while the sum is 26.

The spelling of 21010120100198 in words is "twenty-one trillion, ten billion, one hundred twenty million, one hundred thousand, one hundred ninety-eight".