100433121 has 16 divisors (see below), whose sum is σ = 137225088. Its totient is φ = 65318400.

The previous prime is 100433117. The next prime is 100433131. The reversal of 100433121 is 121334001.

It is not a de Polignac number, because 100433121 - 2² = 100433117 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 100433121.

It is not an unprimeable number, because it can be changed into a prime (100433131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18231 + ... + 23091.

It is an arithmetic number, because the mean of its divisors is an integer number (8576568).

Almost surely, 2^100433121 is an apocalyptic number.

It is an amenable number.

100433121 is a deficient number, since it is larger than the sum of its proper divisors (36791967).

100433121 is an equidigital number, since it uses as much as digits as its factorization.

100433121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5032.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 100433121 is about 10021.6326514196. The cubic root of 100433121 is about 464.8280414002.

Adding to 100433121 its reverse (121334001), we get a palindrome (221767122).

The spelling of 100433121 in words is "one hundred million, four hundred thirty-three thousand, one hundred twenty-one".