22421131457 has 2 divisors, whose sum is σ = 22421131458. Its totient is φ = 22421131456.

The previous prime is 22421131433. The next prime is 22421131487. The reversal of 22421131457 is 75413112422.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18322058881 + 4099072576 = 135359^2 + 64024^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22421131457 is a prime.

It is not a weakly prime, because it can be changed into another prime (22421131417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11210565728 + 11210565729.

It is an arithmetic number, because the mean of its divisors is an integer number (11210565729).

Almost surely, 2^22421131457 is an apocalyptic number.

It is an amenable number.

22421131457 is a deficient number, since it is larger than the sum of its proper divisors (1).

22421131457 is an equidigital number, since it uses as much as digits as its factorization.

22421131457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 32.

Adding to 22421131457 its reverse (75413112422), we get a palindrome (97834243879).

The spelling of 22421131457 in words is "twenty-two billion, four hundred twenty-one million, one hundred thirty-one thousand, four hundred fifty-seven".