100220221121 has 4 divisors (see below), whose sum is σ = 100273560000. Its totient is φ = 100166882244.

The previous prime is 100220221103. The next prime is 100220221141. The reversal of 100220221121 is 121122022001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100220221121 - 2³⁴ = 83040351937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100220221096 and 100220221105.

It is not an unprimeable number, because it can be changed into a prime (100220221141) 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, 26666621 + ... + 26670378.

It is an arithmetic number, because the mean of its divisors is an integer number (25068390000).

Almost surely, 2^100220221121 is an apocalyptic number.

It is an amenable number.

100220221121 is a deficient number, since it is larger than the sum of its proper divisors (53338879).

100220221121 is an equidigital number, since it uses as much as digits as its factorization.

100220221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53338878.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 100220221121 its reverse (121122022001), we get a palindrome (221342243122).

The spelling of 100220221121 in words is "one hundred billion, two hundred twenty million, two hundred twenty-one thousand, one hundred twenty-one".