22421040437 has 2 divisors, whose sum is σ = 22421040438. Its totient is φ = 22421040436.

The previous prime is 22421040407. The next prime is 22421040449. The reversal of 22421040437 is 73404012422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22176868561 + 244171876 = 148919^2 + 15626^2 .

It is a cyclic number.

It is not a de Polignac number, because 22421040437 - 2²⁶ = 22353931573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22421040407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11210520218 + 11210520219.

It is an arithmetic number, because the mean of its divisors is an integer number (11210520219).

Almost surely, 2^22421040437 is an apocalyptic number.

It is an amenable number.

22421040437 is a deficient number, since it is larger than the sum of its proper divisors (1).

22421040437 is an equidigital number, since it uses as much as digits as its factorization.

22421040437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 29.

Adding to 22421040437 its reverse (73404012422), we get a palindrome (95825052859).

The spelling of 22421040437 in words is "twenty-two billion, four hundred twenty-one million, forty thousand, four hundred thirty-seven".