22071937 has 2 divisors, whose sum is σ = 22071938. Its totient is φ = 22071936.

The previous prime is 22071919. The next prime is 22071979. The reversal of 22071937 is 73917022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21381376 + 690561 = 4624^2 + 831^2 .

It is a cyclic number.

It is not a de Polignac number, because 22071937 - 2⁷ = 22071809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22071899 and 22071908.

It is not a weakly prime, because it can be changed into another prime (22071037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11035968 + 11035969.

It is an arithmetic number, because the mean of its divisors is an integer number (11035969).

Almost surely, 2^22071937 is an apocalyptic number.

It is an amenable number.

22071937 is a deficient number, since it is larger than the sum of its proper divisors (1).

22071937 is an equidigital number, since it uses as much as digits as its factorization.

22071937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 22071937 is about 4698.0780112723. The cubic root of 22071937 is about 280.5090103369.

Adding to 22071937 its reverse (73917022), we get a palindrome (95988959).

The spelling of 22071937 in words is "twenty-two million, seventy-one thousand, nine hundred thirty-seven".