100233121 has 4 divisors (see below), whose sum is σ = 100266544. Its totient is φ = 100199700.

The previous prime is 100233109. The next prime is 100233127. The reversal of 100233121 is 121332001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121332001 = 7 ⋅17333143.

It is a cyclic number.

It is not a de Polignac number, because 100233121 - 2²³ = 91844513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100233127) 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 3 ways as a sum of consecutive naturals, for example, 11715 + ... + 18376.

It is an arithmetic number, because the mean of its divisors is an integer number (25066636).

Almost surely, 2^100233121 is an apocalyptic number.

It is an amenable number.

100233121 is a deficient number, since it is larger than the sum of its proper divisors (33423).

100233121 is an equidigital number, since it uses as much as digits as its factorization.

100233121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33422.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 100233121 is about 10011.6492647316. The cubic root of 100233121 is about 464.5192873905.

Adding to 100233121 its reverse (121332001), we get a palindrome (221565122).

The spelling of 100233121 in words is "one hundred million, two hundred thirty-three thousand, one hundred twenty-one".