222020440457 has 2 divisors, whose sum is σ = 222020440458. Its totient is φ = 222020440456.

The previous prime is 222020440399. The next prime is 222020440463. The reversal of 222020440457 is 754044020222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210514874761 + 11505565696 = 458819^2 + 107264^2 .

It is a cyclic number.

It is not a de Polignac number, because 222020440457 - 2²⁸ = 221752005001 is a prime.

It is not a weakly prime, because it can be changed into another prime (222020440157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111010220228 + 111010220229.

It is an arithmetic number, because the mean of its divisors is an integer number (111010220229).

Almost surely, 2^222020440457 is an apocalyptic number.

It is an amenable number.

222020440457 is a deficient number, since it is larger than the sum of its proper divisors (1).

222020440457 is an equidigital number, since it uses as much as digits as its factorization.

222020440457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35840, while the sum is 32.

Adding to 222020440457 its reverse (754044020222), we get a palindrome (976064460679).

The spelling of 222020440457 in words is "two hundred twenty-two billion, twenty million, four hundred forty thousand, four hundred fifty-seven".