100012000122 has 12 divisors (see below), whose sum is σ = 216692666970. Its totient is φ = 33337333368.

The previous prime is 100012000117. The next prime is 100012000129. The reversal of 100012000122 is 221000210001.

It can be written as a sum of positive squares in only one way, i.e., 97724386881 + 2287613241 = 312609^2 + 47829^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (100012000129) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2778111097 + ... + 2778111132.

Almost surely, 2^100012000122 is an apocalyptic number.

100012000122 is an abundant number, since it is smaller than the sum of its proper divisors (116680666848).

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

100012000122 is a wasteful number, since it uses less digits than its factorization.

100012000122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5556222237 (or 5556222234 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 100012000122 its reverse (221000210001), we get a palindrome (321012210123).

The spelling of 100012000122 in words is "one hundred billion, twelve million, one hundred twenty-two", and thus it is an aban number.