100120122 has 24 divisors (see below), whose sum is σ = 224408340. Its totient is φ = 32222400.

The previous prime is 100120091. The next prime is 100120159. The reversal of 100120122 is 221021001.

It can be written as a sum of positive squares in 2 ways, for example, as 88566921 + 11553201 = 9411^2 + 3399^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95379 + ... + 96422.

Almost surely, 2^100120122 is an apocalyptic number.

100120122 is an abundant number, since it is smaller than the sum of its proper divisors (124288218).

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

100120122 is a wasteful number, since it uses less digits than its factorization.

100120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191838 (or 191835 counting only the distinct ones).

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

The square root of 100120122 is about 10006.0042974206. The cubic root of 100120122 is about 464.3446613057.

Adding to 100120122 its reverse (221021001), we get a palindrome (321141123).

The spelling of 100120122 in words is "one hundred million, one hundred twenty thousand, one hundred twenty-two".