22010200221221 has 4 divisors (see below), whose sum is σ = 22338710672352. Its totient is φ = 21681689770092.

The previous prime is 22010200221199. The next prime is 22010200221223. The reversal of 22010200221221 is 12212200201022.

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-22010200221221 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 22010200221221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22010200221223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164255225465 + ... + 164255225598.

It is an arithmetic number, because the mean of its divisors is an integer number (5584677668088).

Almost surely, 2^{22010200221221} is an apocalyptic number.

It is an amenable number.

22010200221221 is a deficient number, since it is larger than the sum of its proper divisors (328510451131).

22010200221221 is an equidigital number, since it uses as much as digits as its factorization.

22010200221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328510451130.

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

Adding to 22010200221221 its reverse (12212200201022), we get a palindrome (34222400422243).

The spelling of 22010200221221 in words is "twenty-two trillion, ten billion, two hundred million, two hundred twenty-one thousand, two hundred twenty-one".