21100220300122 has 16 divisors (see below), whose sum is σ = 33030225490752. Its totient is φ = 10090250517600.

The previous prime is 21100220299999. The next prime is 21100220300147. The reversal of 21100220300122 is 22100302200112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21100220300096 and 21100220300105.

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, 25940379 + ... + 26741422.

It is an arithmetic number, because the mean of its divisors is an integer number (2064389093172).

Almost surely, 2^{21100220300122} is an apocalyptic number.

21100220300122 is a deficient number, since it is larger than the sum of its proper divisors (11930005190630).

21100220300122 is a wasteful number, since it uses less digits than its factorization.

21100220300122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52690533.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21100220300122 its reverse (22100302200112), we get a palindrome (43200522500234).

The spelling of 21100220300122 in words is "twenty-one trillion, one hundred billion, two hundred twenty million, three hundred thousand, one hundred twenty-two".