22220120010221 has 4 divisors (see below), whose sum is σ = 25394422868832. Its totient is φ = 19045817151612.

The previous prime is 22220120010191. The next prime is 22220120010223. The reversal of 22220120010221 is 12201002102222.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22220120010221 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 22220120010221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220120010223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1587151429295 + ... + 1587151429308.

It is an arithmetic number, because the mean of its divisors is an integer number (6348605717208).

Almost surely, 2^{22220120010221} is an apocalyptic number.

It is an amenable number.

22220120010221 is a deficient number, since it is larger than the sum of its proper divisors (3174302858611).

22220120010221 is an equidigital number, since it uses as much as digits as its factorization.

22220120010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3174302858610.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22220120010221 its reverse (12201002102222), we get a palindrome (34421122112443).

The spelling of 22220120010221 in words is "twenty-two trillion, two hundred twenty billion, one hundred twenty million, ten thousand, two hundred twenty-one".