22021020037 has 2 divisors, whose sum is σ = 22021020038. Its totient is φ = 22021020036.

The previous prime is 22021020017. The next prime is 22021020041. The reversal of 22021020037 is 73002012022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16762739841 + 5258280196 = 129471^2 + 72514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22021020037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22021019996 and 22021020023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22021020017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010510018 + 11010510019.

It is an arithmetic number, because the mean of its divisors is an integer number (11010510019).

Almost surely, 2^22021020037 is an apocalyptic number.

It is an amenable number.

22021020037 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021020037 is an equidigital number, since it uses as much as digits as its factorization.

22021020037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 19.

Adding to 22021020037 its reverse (73002012022), we get a palindrome (95023032059).

The spelling of 22021020037 in words is "twenty-two billion, twenty-one million, twenty thousand, thirty-seven".