22041242257 has 2 divisors, whose sum is σ = 22041242258. Its totient is φ = 22041242256.

The previous prime is 22041242231. The next prime is 22041242281. The reversal of 22041242257 is 75224214022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21668134401 + 373107856 = 147201^2 + 19316^2 .

It is a cyclic number.

It is not a de Polignac number, because 22041242257 - 2¹¹ = 22041240209 is a prime.

It is not a weakly prime, because it can be changed into another prime (22041242227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11020621128 + 11020621129.

It is an arithmetic number, because the mean of its divisors is an integer number (11020621129).

Almost surely, 2^22041242257 is an apocalyptic number.

It is an amenable number.

22041242257 is a deficient number, since it is larger than the sum of its proper divisors (1).

22041242257 is an equidigital number, since it uses as much as digits as its factorization.

22041242257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17920, while the sum is 31.

Adding to 22041242257 its reverse (75224214022), we get a palindrome (97265456279).

The spelling of 22041242257 in words is "twenty-two billion, forty-one million, two hundred forty-two thousand, two hundred fifty-seven".