21100119999 has 8 divisors (see below), whose sum is σ = 32152563840. Its totient is φ = 12057211416.

The previous prime is 21100119991. The next prime is 21100120001. The reversal of 21100119999 is 99991100112.

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

It is not a de Polignac number, because 21100119999 - 2³ = 21100119991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21100119999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21100119991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 502383789 + ... + 502383830.

It is an arithmetic number, because the mean of its divisors is an integer number (4019070480).

Almost surely, 2^21100119999 is an apocalyptic number.

21100119999 is a deficient number, since it is larger than the sum of its proper divisors (11052443841).

21100119999 is a wasteful number, since it uses less digits than its factorization.

21100119999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004767629.

The product of its (nonzero) digits is 13122, while the sum is 42.

The spelling of 21100119999 in words is "twenty-one billion, one hundred million, one hundred nineteen thousand, nine hundred ninety-nine".