100021202018 has 8 divisors (see below), whose sum is σ = 150217258860. Its totient is φ = 49948782400.

The previous prime is 100021202011. The next prime is 100021202041. The reversal of 100021202018 is 810202120001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 99614090689 + 407111329 = 315617^2 + 20177^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 100021201987 and 100021202005.

It is not an unprimeable number, because it can be changed into a prime (100021202011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30907283 + ... + 30910518.

Almost surely, 2^100021202018 is an apocalyptic number.

100021202018 is a deficient number, since it is larger than the sum of its proper divisors (50196056842).

100021202018 is an equidigital number, since it uses as much as digits as its factorization.

100021202018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61818612.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 100021202018 its reverse (810202120001), we get a palindrome (910223322019).

The spelling of 100021202018 in words is "one hundred billion, twenty-one million, two hundred two thousand, eighteen".