100120002 has 16 divisors (see below), whose sum is σ = 205652352. Its totient is φ = 32471280.

The previous prime is 100119997. The next prime is 100120003. The reversal of 100120002 is 200021001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is not an unprimeable number, because it can be changed into a prime (100120003) 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 7 ways as a sum of consecutive naturals, for example, 225274 + ... + 225717.

It is an arithmetic number, because the mean of its divisors is an integer number (12853272).

Almost surely, 2^100120002 is an apocalyptic number.

100120002 is an abundant number, since it is smaller than the sum of its proper divisors (105532350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100120002 is a wasteful number, since it uses less digits than its factorization.

100120002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451033.

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 100120002 is about 10005.9983010192. The cubic root of 100120002 is about 464.3444757906.

Adding to 100120002 its reverse (200021001), we get a palindrome (300141003).

Subtracting 100120002 from its reverse (200021001), we obtain a palindrome (99900999).

It can be divided in two parts, 1001 and 20002, that multiplied together give a palindrome (20022002).

The spelling of 100120002 in words is "one hundred million, one hundred twenty thousand, two".