22022200202221 has 2 divisors, whose sum is σ = 22022200202222. Its totient is φ = 22022200202220.

The previous prime is 22022200202147. The next prime is 22022200202281. The reversal of 22022200202221 is 12220200222022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11070991836100 + 10951208366121 = 3327310^2 + 3309261^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22022200202221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22022200202281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11011100101110 + 11011100101111.

It is an arithmetic number, because the mean of its divisors is an integer number (11011100101111).

Almost surely, 2^{22022200202221} is an apocalyptic number.

It is an amenable number.

22022200202221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22022200202221 is an equidigital number, since it uses as much as digits as its factorization.

22022200202221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 22022200202221 its reverse (12220200222022), we get a palindrome (34242400424243).

The spelling of 22022200202221 in words is "twenty-two trillion, twenty-two billion, two hundred million, two hundred two thousand, two hundred twenty-one".