16220137 has 2 divisors, whose sum is σ = 16220138. Its totient is φ = 16220136.

The previous prime is 16220111. The next prime is 16220143. The reversal of 16220137 is 73102261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15452761 + 767376 = 3931^2 + 876^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16220137 is a prime.

It is not a weakly prime, because it can be changed into another prime (16220107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8110068 + 8110069.

It is an arithmetic number, because the mean of its divisors is an integer number (8110069).

Almost surely, 2^16220137 is an apocalyptic number.

It is an amenable number.

16220137 is a deficient number, since it is larger than the sum of its proper divisors (1).

16220137 is an equidigital number, since it uses as much as digits as its factorization.

16220137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 16220137 is about 4027.4231215506. The cubic root of 16220137 is about 253.1345969435.

Adding to 16220137 its reverse (73102261), we get a palindrome (89322398).

The spelling of 16220137 in words is "sixteen million, two hundred twenty thousand, one hundred thirty-seven".