100220202021 has 4 divisors (see below), whose sum is σ = 133626936032. Its totient is φ = 66813468012.

The previous prime is 100220202013. The next prime is 100220202031. The reversal of 100220202021 is 120202022001.

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 not a de Polignac number, because 100220202021 - 2³ = 100220202013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100220201988 and 100220202006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100220202031) 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, 16703367001 + ... + 16703367006.

It is an arithmetic number, because the mean of its divisors is an integer number (33406734008).

Almost surely, 2^100220202021 is an apocalyptic number.

It is an amenable number.

100220202021 is a deficient number, since it is larger than the sum of its proper divisors (33406734011).

100220202021 is an equidigital number, since it uses as much as digits as its factorization.

100220202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33406734010.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 100220202021 its reverse (120202022001), we get a palindrome (220422224022).

The spelling of 100220202021 in words is "one hundred billion, two hundred twenty million, two hundred two thousand, twenty-one".