100220203021 has 4 divisors (see below), whose sum is σ = 100221293952. Its totient is φ = 100219112092.

The previous prime is 100220203009. The next prime is 100220203079. The reversal of 100220203021 is 120302022001.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 100220203021 - 2¹³ = 100220194829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100220202992 and 100220203010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100220203121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393565 + ... + 596098.

It is an arithmetic number, because the mean of its divisors is an integer number (25055323488).

Almost surely, 2^100220203021 is an apocalyptic number.

It is an amenable number.

100220203021 is a deficient number, since it is larger than the sum of its proper divisors (1090931).

100220203021 is an equidigital number, since it uses as much as digits as its factorization.

100220203021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090930.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 100220203021 its reverse (120302022001), we get a palindrome (220522225022).

The spelling of 100220203021 in words is "one hundred billion, two hundred twenty million, two hundred three thousand, twenty-one".