100120002002 has 4 divisors (see below), whose sum is σ = 150180003006. Its totient is φ = 50060001000.

The previous prime is 100120001987. The next prime is 100120002007. The reversal of 100120002002 is 200200021001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 200200021001 = 739 ⋅270906659.

It can be written as a sum of positive squares in only one way, i.e., 79591130161 + 20528871841 = 282119^2 + 143279^2 .

It is not an unprimeable number, because it can be changed into a prime (100120002007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25030000499 + ... + 25030000502.

Almost surely, 2^100120002002 is an apocalyptic number.

100120002002 is a deficient number, since it is larger than the sum of its proper divisors (50060001004).

100120002002 is an equidigital number, since it uses as much as digits as its factorization.

100120002002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50060001003.

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 100120002002 its reverse (200200021001), we get a palindrome (300320023003).

The spelling of 100120002002 in words is "one hundred billion, one hundred twenty million, two thousand, two".