100121938 has 32 divisors (see below), whose sum is σ = 178329600. Its totient is φ = 41268624.

The previous prime is 100121911. The next prime is 100121939. The reversal of 100121938 is 839121001.

It is not an unprimeable number, because it can be changed into a prime (100121939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37533 + ... + 40111.

It is an arithmetic number, because the mean of its divisors is an integer number (5572800).

Almost surely, 2^100121938 is an apocalyptic number.

100121938 is a deficient number, since it is larger than the sum of its proper divisors (78207662).

100121938 is a wasteful number, since it uses less digits than its factorization.

100121938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2694.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 100121938 is about 10006.0950425228. The cubic root of 100121938 is about 464.3474687494.

Adding to 100121938 its reverse (839121001), we get a palindrome (939242939).

The spelling of 100121938 in words is "one hundred million, one hundred twenty-one thousand, nine hundred thirty-eight".