20223222102221 has 2 divisors, whose sum is σ = 20223222102222. Its totient is φ = 20223222102220.

The previous prime is 20223222102107. The next prime is 20223222102229. The reversal of 20223222102221 is 12220122232202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17480852982121 + 2742369120100 = 4181011^2 + 1656010^2 .

It is a cyclic number.

It is not a de Polignac number, because 20223222102221 - 2⁴² = 15825175591117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20223222102229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10111611051110 + 10111611051111.

It is an arithmetic number, because the mean of its divisors is an integer number (10111611051111).

Almost surely, 2^{20223222102221} is an apocalyptic number.

It is an amenable number.

20223222102221 is a deficient number, since it is larger than the sum of its proper divisors (1).

20223222102221 is an equidigital number, since it uses as much as digits as its factorization.

20223222102221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20223222102221 its reverse (12220122232202), we get a palindrome (32443344334423).

The spelling of 20223222102221 in words is "twenty trillion, two hundred twenty-three billion, two hundred twenty-two million, one hundred two thousand, two hundred twenty-one".