20222210257 has 2 divisors, whose sum is σ = 20222210258. Its totient is φ = 20222210256.

The previous prime is 20222210201. The next prime is 20222210279. The reversal of 20222210257 is 75201222202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17571093136 + 2651117121 = 132556^2 + 51489^2 .

It is a cyclic number.

It is not a de Polignac number, because 20222210257 - 2³¹ = 18074726609 is a prime.

It is not a weakly prime, because it can be changed into another prime (20222210357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10111105128 + 10111105129.

It is an arithmetic number, because the mean of its divisors is an integer number (10111105129).

Almost surely, 2^20222210257 is an apocalyptic number.

It is an amenable number.

20222210257 is a deficient number, since it is larger than the sum of its proper divisors (1).

20222210257 is an equidigital number, since it uses as much as digits as its factorization.

20222210257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 25.

Adding to 20222210257 its reverse (75201222202), we get a palindrome (95423432459).

The spelling of 20222210257 in words is "twenty billion, two hundred twenty-two million, two hundred ten thousand, two hundred fifty-seven".