20121100112122 has 32 divisors (see below), whose sum is σ = 30708034156800. Its totient is φ = 9887045313600.

The previous prime is 20121100112101. The next prime is 20121100112221. The reversal of 20121100112122 is 22121100112102.

It is a junction number, because it is equal to n+sod(n) for n = 20121100112096 and 20121100112105.

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, 10446204 + ... + 12221512.

It is an arithmetic number, because the mean of its divisors is an integer number (959626067400).

Almost surely, 2^{20121100112122} is an apocalyptic number.

20121100112122 is a deficient number, since it is larger than the sum of its proper divisors (10586934044678).

20121100112122 is a wasteful number, since it uses less digits than its factorization.

20121100112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1775862.

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

Adding to 20121100112122 its reverse (22121100112102), we get a palindrome (42242200224224).

The spelling of 20121100112122 in words is "twenty trillion, one hundred twenty-one billion, one hundred million, one hundred twelve thousand, one hundred twenty-two".