37221229 has 2 divisors, whose sum is σ = 37221230. Its totient is φ = 37221228.

The previous prime is 37221203. The next prime is 37221257. The reversal of 37221229 is 92212273.

It is an a-pointer prime, because the next prime (37221257) can be obtained adding 37221229 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28869129 + 8352100 = 5373^2 + 2890^2 .

It is an emirp because it is prime and its reverse (92212273) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37221229 - 2¹³ = 37213037 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 37221197 and 37221206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37221269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18610614 + 18610615.

It is an arithmetic number, because the mean of its divisors is an integer number (18610615).

Almost surely, 2^37221229 is an apocalyptic number.

It is an amenable number.

37221229 is a deficient number, since it is larger than the sum of its proper divisors (1).

37221229 is an equidigital number, since it uses as much as digits as its factorization.

37221229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 28.

The square root of 37221229 is about 6100.9203404077. The cubic root of 37221229 is about 333.8849957244.

The spelling of 37221229 in words is "thirty-seven million, two hundred twenty-one thousand, two hundred twenty-nine".