100221300121 has 4 divisors (see below), whose sum is σ = 101140761700. Its totient is φ = 99301838544.

The previous prime is 100221300107. The next prime is 100221300133. The reversal of 100221300121 is 121003122001.

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 23901160000 + 76320140121 = 154600^2 + 276261^2 .

It is a cyclic number.

It is not a de Polignac number, because 100221300121 - 2⁹ = 100221299609 is a prime.

It is a super-2 number, since 2×100221300121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100221300161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459730626 + ... + 459730843.

It is an arithmetic number, because the mean of its divisors is an integer number (25285190425).

Almost surely, 2^100221300121 is an apocalyptic number.

It is an amenable number.

100221300121 is a deficient number, since it is larger than the sum of its proper divisors (919461579).

100221300121 is an equidigital number, since it uses as much as digits as its factorization.

100221300121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919461578.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 100221300121 its reverse (121003122001), we get a palindrome (221224422122).

The spelling of 100221300121 in words is "one hundred billion, two hundred twenty-one million, three hundred thousand, one hundred twenty-one".