100001222101 has 6 divisors (see below), whose sum is σ = 109918698806. Its totient is φ = 90910201800.

The previous prime is 100001222039. The next prime is 100001222141. The reversal of 100001222101 is 101222100001.

It can be written as a sum of positive squares in only one way, i.e., 81381255076 + 18619967025 = 285274^2 + 136455^2 .

It is not a de Polignac number, because 100001222101 - 2⁹ = 100001221589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100001222141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 413228070 + ... + 413228311.

Almost surely, 2^100001222101 is an apocalyptic number.

100001222101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100001222101 is a deficient number, since it is larger than the sum of its proper divisors (9917476705).

100001222101 is an equidigital number, since it uses as much as digits as its factorization.

100001222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826456403 (or 826456392 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 100001222101 its reverse (101222100001), we get a palindrome (201223322102).

The spelling of 100001222101 in words is "one hundred billion, one million, two hundred twenty-two thousand, one hundred one".