22202021220221 has 4 divisors (see below), whose sum is σ = 22202033112000. Its totient is φ = 22202009328444.

The previous prime is 22202021220209. The next prime is 22202021220229. The reversal of 22202021220221 is 12202212020222.

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 22202021220221 - 2⁶ = 22202021220157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22202021220193 and 22202021220202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22202021220229) 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, 2466821 + ... + 7105578.

It is an arithmetic number, because the mean of its divisors is an integer number (5550508278000).

Almost surely, 2^{22202021220221} is an apocalyptic number.

It is an amenable number.

22202021220221 is a deficient number, since it is larger than the sum of its proper divisors (11891779).

22202021220221 is an equidigital number, since it uses as much as digits as its factorization.

22202021220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11891778.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 22202021220221 its reverse (12202212020222), we get a palindrome (34404233240443).

The spelling of 22202021220221 in words is "twenty-two trillion, two hundred two billion, twenty-one million, two hundred twenty thousand, two hundred twenty-one".