22402244437 has 2 divisors, whose sum is σ = 22402244438. Its totient is φ = 22402244436.

The previous prime is 22402244429. The next prime is 22402244471. The reversal of 22402244437 is 73444220422.

It is an a-pointer prime, because the next prime (22402244471) can be obtained adding 22402244437 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16972617841 + 5429626596 = 130279^2 + 73686^2 .

It is a cyclic number.

It is not a de Polignac number, because 22402244437 - 2³ = 22402244429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22402244407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11201122218 + 11201122219.

It is an arithmetic number, because the mean of its divisors is an integer number (11201122219).

Almost surely, 2^22402244437 is an apocalyptic number.

It is an amenable number.

22402244437 is a deficient number, since it is larger than the sum of its proper divisors (1).

22402244437 is an equidigital number, since it uses as much as digits as its factorization.

22402244437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86016, while the sum is 34.

Adding to 22402244437 its reverse (73444220422), we get a palindrome (95846464859).

The spelling of 22402244437 in words is "twenty-two billion, four hundred two million, two hundred forty-four thousand, four hundred thirty-seven".