21100110121122 has 32 divisors (see below), whose sum is σ = 44425685472000. Its totient is φ = 6662532518928.

The previous prime is 21100110121093. The next prime is 21100110121163. The reversal of 21100110121122 is 22112101100112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8012428 + ... + 10314999.

It is an arithmetic number, because the mean of its divisors is an integer number (1388302671000).

Almost surely, 2^{21100110121122} is an apocalyptic number.

21100110121122 is an abundant number, since it is smaller than the sum of its proper divisors (23325575350878).

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

21100110121122 is a wasteful number, since it uses less digits than its factorization.

21100110121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18337550.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 21100110121122 its reverse (22112101100112), we get a palindrome (43212211221234).

The spelling of 21100110121122 in words is "twenty-one trillion, one hundred billion, one hundred ten million, one hundred twenty-one thousand, one hundred twenty-two".