21100100200122 has 16 divisors (see below), whose sum is σ = 43181600410080. Its totient is φ = 6869800065072.

The previous prime is 21100100200061. The next prime is 21100100200169. The reversal of 21100100200122 is 22100200100112.

It is a junction number, because it is equal to n+sod(n) for n = 21100100200098 and 21100100200107.

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, 40891666797 + ... + 40891667312.

It is an arithmetic number, because the mean of its divisors is an integer number (2698850025630).

Almost surely, 2^{21100100200122} is an apocalyptic number.

21100100200122 is an abundant number, since it is smaller than the sum of its proper divisors (22081500209958).

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

21100100200122 is a wasteful number, since it uses less digits than its factorization.

21100100200122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81783334157.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21100100200122 its reverse (22100200100112), we get a palindrome (43200300300234).

The spelling of 21100100200122 in words is "twenty-one trillion, one hundred billion, one hundred million, two hundred thousand, one hundred twenty-two".