21100112002 has 8 divisors (see below), whose sum is σ = 33026262336. Its totient is φ = 10091357892.

The previous prime is 21100111999. The next prime is 21100112017. The reversal of 21100112002 is 20021100112.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21100112002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229348998 + ... + 229349089.

It is an arithmetic number, because the mean of its divisors is an integer number (4128282792).

Almost surely, 2^21100112002 is an apocalyptic number.

21100112002 is a deficient number, since it is larger than the sum of its proper divisors (11926150334).

21100112002 is a wasteful number, since it uses less digits than its factorization.

21100112002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458698112.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21100112002 its reverse (20021100112), we get a palindrome (41121212114).

The spelling of 21100112002 in words is "twenty-one billion, one hundred million, one hundred twelve thousand, two".