22521112243321 has 2 divisors, whose sum is σ = 22521112243322. Its totient is φ = 22521112243320.

The previous prime is 22521112243261. The next prime is 22521112243339. The reversal of 22521112243321 is 12334221112522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21027828243321 + 1493284000000 = 4585611^2 + 1222000^2 .

It is a cyclic number.

It is not a de Polignac number, because 22521112243321 - 2¹⁷ = 22521112112249 is a prime.

It is not a weakly prime, because it can be changed into another prime (22521112243391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11260556121660 + 11260556121661.

It is an arithmetic number, because the mean of its divisors is an integer number (11260556121661).

Almost surely, 2^{22521112243321} is an apocalyptic number.

It is an amenable number.

22521112243321 is a deficient number, since it is larger than the sum of its proper divisors (1).

22521112243321 is an equidigital number, since it uses as much as digits as its factorization.

22521112243321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 31.

Adding to 22521112243321 its reverse (12334221112522), we get a palindrome (34855333355843).

The spelling of 22521112243321 in words is "twenty-two trillion, five hundred twenty-one billion, one hundred twelve million, two hundred forty-three thousand, three hundred twenty-one".