100021233 has 16 divisors (see below), whose sum is σ = 143821440. Its totient is φ = 61465344.

The previous prime is 100021231. The next prime is 100021237. The reversal of 100021233 is 332120001.

It is a happy number.

It is not a de Polignac number, because 100021233 - 2¹ = 100021231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100021231) 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, 37033 + ... + 39641.

It is an arithmetic number, because the mean of its divisors is an integer number (8988840).

Almost surely, 2^100021233 is an apocalyptic number.

100021233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

100021233 is a deficient number, since it is larger than the sum of its proper divisors (43800207).

100021233 is a wasteful number, since it uses less digits than its factorization.

100021233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3608.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 100021233 is about 10001.0615936509. The cubic root of 100021233 is about 464.1917326550.

Adding to 100021233 its reverse (332120001), we get a palindrome (432141234).

The spelling of 100021233 in words is "one hundred million, twenty-one thousand, two hundred thirty-three".