22121502321241 has 2 divisors, whose sum is σ = 22121502321242. Its totient is φ = 22121502321240.

The previous prime is 22121502321239. The next prime is 22121502321251. The reversal of 22121502321241 is 14212320512122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13285769851225 + 8835732470016 = 3644965^2 + 2972496^2 .

It is a cyclic number.

It is not a de Polignac number, because 22121502321241 - 2¹ = 22121502321239 is a prime.

Together with 22121502321239, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22121502321251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060751160620 + 11060751160621.

It is an arithmetic number, because the mean of its divisors is an integer number (11060751160621).

Almost surely, 2^{22121502321241} is an apocalyptic number.

It is an amenable number.

22121502321241 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121502321241 is an equidigital number, since it uses as much as digits as its factorization.

22121502321241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 22121502321241 its reverse (14212320512122), we get a palindrome (36333822833363).

The spelling of 22121502321241 in words is "twenty-two trillion, one hundred twenty-one billion, five hundred two million, three hundred twenty-one thousand, two hundred forty-one".