22100200102021 has 4 divisors (see below), whose sum is σ = 22639229372844. Its totient is φ = 21561170831200.

The previous prime is 22100200101997. The next prime is 22100200102033. The reversal of 22100200102021 is 12020100200122.

It is a happy number.

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 1230515429796 + 20869684672225 = 1109286^2 + 4568335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22100200102021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22100200101992 and 22100200102010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22100200100021) 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, 269514635350 + ... + 269514635431.

It is an arithmetic number, because the mean of its divisors is an integer number (5659807343211).

Almost surely, 2^{22100200102021} is an apocalyptic number.

It is an amenable number.

22100200102021 is a deficient number, since it is larger than the sum of its proper divisors (539029270823).

22100200102021 is an equidigital number, since it uses as much as digits as its factorization.

22100200102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539029270822.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22100200102021 its reverse (12020100200122), we get a palindrome (34120300302143).

The spelling of 22100200102021 in words is "twenty-two trillion, one hundred billion, two hundred million, one hundred two thousand, twenty-one".