2221424023457 has 2 divisors, whose sum is σ = 2221424023458. Its totient is φ = 2221424023456.

The previous prime is 2221424023391. The next prime is 2221424023471. The reversal of 2221424023457 is 7543204241222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1402876793761 + 818547229696 = 1184431^2 + 904736^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221424023457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2221424023457.

It is not a weakly prime, because it can be changed into another prime (2221426023457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110712011728 + 1110712011729.

It is an arithmetic number, because the mean of its divisors is an integer number (1110712011729).

Almost surely, 2^{2221424023457} is an apocalyptic number.

It is an amenable number.

2221424023457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221424023457 is an equidigital number, since it uses as much as digits as its factorization.

2221424023457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 215040, while the sum is 38.

Adding to 2221424023457 its reverse (7543204241222), we get a palindrome (9764628264679).

The spelling of 2221424023457 in words is "two trillion, two hundred twenty-one billion, four hundred twenty-four million, twenty-three thousand, four hundred fifty-seven".