22020200100021 has 4 divisors (see below), whose sum is σ = 29360266800032. Its totient is φ = 14680133400012.

The previous prime is 22020200099987. The next prime is 22020200100023. The reversal of 22020200100021 is 12000100202022.

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 22020200100021 - 2⁹ = 22020200099509 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 (22020200100023) 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, 3670033350001 + ... + 3670033350006.

It is an arithmetic number, because the mean of its divisors is an integer number (7340066700008).

Almost surely, 2^{22020200100021} is an apocalyptic number.

It is an amenable number.

22020200100021 is a deficient number, since it is larger than the sum of its proper divisors (7340066700011).

22020200100021 is an equidigital number, since it uses as much as digits as its factorization.

22020200100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7340066700010.

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

Adding to 22020200100021 its reverse (12000100202022), we get a palindrome (34020300302043).

The spelling of 22020200100021 in words is "twenty-two trillion, twenty billion, two hundred million, one hundred thousand, twenty-one".