100121124 has 24 divisors (see below), whose sum is σ = 236575360. Its totient is φ = 32950944.

The previous prime is 100121123. The next prime is 100121129. The reversal of 100121124 is 421121001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (100121123) 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, 51859 + ... + 53754.

Almost surely, 2^100121124 is an apocalyptic number.

It is an amenable number.

100121124 is an abundant number, since it is smaller than the sum of its proper divisors (136454236).

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

100121124 is a wasteful number, since it uses less digits than its factorization.

100121124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105699 (or 105697 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 100121124 is about 10006.0543672319. The cubic root of 100121124 is about 464.3462103509.

Adding to 100121124 its reverse (421121001), we get a palindrome (521242125).

The spelling of 100121124 in words is "one hundred million, one hundred twenty-one thousand, one hundred twenty-four".