21101200112122 has 16 divisors (see below), whose sum is σ = 34116907194720. Its totient is φ = 9730343102832.

The previous prime is 21101200112119. The next prime is 21101200112149. The reversal of 21101200112122 is 22121100210112.

It is a junction number, because it is equal to n+sod(n) for n = 21101200112096 and 21101200112105.

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, 361317472 + ... + 361375867.

It is an arithmetic number, because the mean of its divisors is an integer number (2132306699670).

Almost surely, 2^{21101200112122} is an apocalyptic number.

21101200112122 is a deficient number, since it is larger than the sum of its proper divisors (13015707082598).

21101200112122 is a wasteful number, since it uses less digits than its factorization.

21101200112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722694477.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21101200112122 its reverse (22121100210112), we get a palindrome (43222300322234).

The spelling of 21101200112122 in words is "twenty-one trillion, one hundred one billion, two hundred million, one hundred twelve thousand, one hundred twenty-two".