22042400057 has 2 divisors, whose sum is σ = 22042400058. Its totient is φ = 22042400056.

The previous prime is 22042399999. The next prime is 22042400063. The reversal of 22042400057 is 75000424022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20328771241 + 1713628816 = 142579^2 + 41396^2 .

It is a cyclic number.

It is not a de Polignac number, because 22042400057 - 2⁶ = 22042399993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22042399999 and 22042400035.

It is not a weakly prime, because it can be changed into another prime (22042400357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11021200028 + 11021200029.

It is an arithmetic number, because the mean of its divisors is an integer number (11021200029).

Almost surely, 2^22042400057 is an apocalyptic number.

It is an amenable number.

22042400057 is a deficient number, since it is larger than the sum of its proper divisors (1).

22042400057 is an equidigital number, since it uses as much as digits as its factorization.

22042400057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 26.

Adding to 22042400057 its reverse (75000424022), we get a palindrome (97042824079).

The spelling of 22042400057 in words is "twenty-two billion, forty-two million, four hundred thousand, fifty-seven".