12220037 has 2 divisors, whose sum is σ = 12220038. Its totient is φ = 12220036.

The previous prime is 12220031. The next prime is 12220081. The reversal of 12220037 is 73002221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6832996 + 5387041 = 2614^2 + 2321^2 .

It is a cyclic number.

It is not a de Polignac number, because 12220037 - 2⁶ = 12219973 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12219997 and 12220024.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12220031) 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, 6110018 + 6110019.

It is an arithmetic number, because the mean of its divisors is an integer number (6110019).

Almost surely, 2^12220037 is an apocalyptic number.

It is an amenable number.

12220037 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220037 is an equidigital number, since it uses as much as digits as its factorization.

12220037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 12220037 is about 3495.7169507842. The cubic root of 12220037 is about 230.3337121727. Note that the first 3 decimals are identical.

Adding to 12220037 its reverse (73002221), we get a palindrome (85222258).

The spelling of 12220037 in words is "twelve million, two hundred twenty thousand, thirty-seven".