212100112122 has 16 divisors (see below), whose sum is σ = 424405872000. Its totient is φ = 70665762752.

The previous prime is 212100112097. The next prime is 212100112123. The reversal of 212100112122 is 221211001212.

212100112122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (212100112123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8555247 + ... + 8580002.

It is an arithmetic number, because the mean of its divisors is an integer number (26525367000).

Almost surely, 2^212100112122 is an apocalyptic number.

212100112122 is an abundant number, since it is smaller than the sum of its proper divisors (212305759878).

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

212100112122 is a wasteful number, since it uses less digits than its factorization.

212100112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17137317.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212100112122 its reverse (221211001212), we get a palindrome (433311113334).

The spelling of 212100112122 in words is "two hundred twelve billion, one hundred million, one hundred twelve thousand, one hundred twenty-two".