22021302000221 has 4 divisors (see below), whose sum is σ = 22103165576700. Its totient is φ = 21939438423744.

The previous prime is 22021302000179. The next prime is 22021302000251. The reversal of 22021302000221 is 12200020312022.

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 1448137864996 + 20573164135225 = 1203386^2 + 4535765^2 .

It is a cyclic number.

It is not a de Polignac number, because 22021302000221 - 2¹⁰ = 22021301999197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22021302000221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021302000251) 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, 40931787836 + ... + 40931788373.

It is an arithmetic number, because the mean of its divisors is an integer number (5525791394175).

Almost surely, 2^{22021302000221} is an apocalyptic number.

It is an amenable number.

22021302000221 is a deficient number, since it is larger than the sum of its proper divisors (81863576479).

22021302000221 is an equidigital number, since it uses as much as digits as its factorization.

22021302000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81863576478.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 22021302000221 its reverse (12200020312022), we get a palindrome (34221322312243).

The spelling of 22021302000221 in words is "twenty-two trillion, twenty-one billion, three hundred two million, two hundred twenty-one", and thus it is an aban number.