100221200021 has 8 divisors (see below), whose sum is σ = 103681221600. Its totient is φ = 96761453040.

The previous prime is 100221199973. The next prime is 100221200077. The reversal of 100221200021 is 120002122001.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 100221200021 - 2²² = 100217005717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100221199975 and 100221200011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221200621) 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 7 ways as a sum of consecutive naturals, for example, 911090 + ... + 1015148.

It is an arithmetic number, because the mean of its divisors is an integer number (12960152700).

Almost surely, 2^100221200021 is an apocalyptic number.

It is an amenable number.

100221200021 is a deficient number, since it is larger than the sum of its proper divisors (3460021579).

100221200021 is a wasteful number, since it uses less digits than its factorization.

100221200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137299.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 100221200021 its reverse (120002122001), we get a palindrome (220223322022).

The spelling of 100221200021 in words is "one hundred billion, two hundred twenty-one million, two hundred thousand, twenty-one".