21100200211122 has 16 divisors (see below), whose sum is σ = 42200463296640. Its totient is φ = 7033389591312.

The previous prime is 21100200211109. The next prime is 21100200211169. The reversal of 21100200211122 is 22111200200112.

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, 2518023 + ... + 6967125.

It is an arithmetic number, because the mean of its divisors is an integer number (2637528956040).

Almost surely, 2^{21100200211122} is an apocalyptic number.

21100200211122 is an abundant number, since it is smaller than the sum of its proper divisors (21100263085518).

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

21100200211122 is a wasteful number, since it uses less digits than its factorization.

21100200211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5239537.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21100200211122 its reverse (22111200200112), we get a palindrome (43211400411234).

The spelling of 21100200211122 in words is "twenty-one trillion, one hundred billion, two hundred million, two hundred eleven thousand, one hundred twenty-two".