100222201021 has 4 divisors (see below), whose sum is σ = 100445413500. Its totient is φ = 99998988544.

The previous prime is 100222201019. The next prime is 100222201033. The reversal of 100222201021 is 120102222001.

It is a happy number.

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 40485464100 + 59736736921 = 201210^2 + 244411^2 .

It is a cyclic number.

It is not a de Polignac number, because 100222201021 - 2¹ = 100222201019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100222200992 and 100222201010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100222201061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111605566 + ... + 111606463.

It is an arithmetic number, because the mean of its divisors is an integer number (25111353375).

Almost surely, 2^100222201021 is an apocalyptic number.

It is an amenable number.

100222201021 is a deficient number, since it is larger than the sum of its proper divisors (223212479).

100222201021 is an equidigital number, since it uses as much as digits as its factorization.

100222201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223212478.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 100222201021 its reverse (120102222001), we get a palindrome (220324423022).

The spelling of 100222201021 in words is "one hundred billion, two hundred twenty-two million, two hundred one thousand, twenty-one".