21100120110202 has 16 divisors (see below), whose sum is σ = 36192652316352. Its totient is φ = 9037654158240.

The previous prime is 21100120110193. The next prime is 21100120110257. The reversal of 21100120110202 is 20201102100112.

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, 437846748 + ... + 437894935.

It is an arithmetic number, because the mean of its divisors is an integer number (2262040769772).

Almost surely, 2^{21100120110202} is an apocalyptic number.

21100120110202 is a deficient number, since it is larger than the sum of its proper divisors (15092532206150).

21100120110202 is a wasteful number, since it uses less digits than its factorization.

21100120110202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875743413.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21100120110202 its reverse (20201102100112), we get a palindrome (41301222210314).

The spelling of 21100120110202 in words is "twenty-one trillion, one hundred billion, one hundred twenty million, one hundred ten thousand, two hundred two".