100120033 has 4 divisors (see below), whose sum is σ = 107821588. Its totient is φ = 92418480.

The previous prime is 100120003. The next prime is 100120037. The reversal of 100120033 is 330021001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6185169 + 93934864 = 2487^2 + 9692^2 .

It is a cyclic number.

It is not a de Polignac number, because 100120033 - 2¹⁷ = 99988961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100120037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3850758 + ... + 3850783.

It is an arithmetic number, because the mean of its divisors is an integer number (26955397).

Almost surely, 2^100120033 is an apocalyptic number.

100120033 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

100120033 is a deficient number, since it is larger than the sum of its proper divisors (7701555).

100120033 is an equidigital number, since it uses as much as digits as its factorization.

100120033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7701554.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 100120033 is about 10005.9998500899. Note that the first 3 decimals coincide. The cubic root of 100120033 is about 464.3445237153.

Adding to 100120033 its reverse (330021001), we get a palindrome (430141034).

The spelling of 100120033 in words is "one hundred million, one hundred twenty thousand, thirty-three".