1216273 has 2 divisors, whose sum is σ = 1216274. Its totient is φ = 1216272.

The previous prime is 1216249. The next prime is 1216277. The reversal of 1216273 is 3726121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1046529 + 169744 = 1023^2 + 412^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1216273 is a prime.

It is not a weakly prime, because it can be changed into another prime (1216277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608136 + 608137.

It is an arithmetic number, because the mean of its divisors is an integer number (608137).

2^1216273 is an apocalyptic number.

It is an amenable number.

1216273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1216273 is an equidigital number, since it uses as much as digits as its factorization.

1216273 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1216273 is about 1102.8476776056. The cubic root of 1216273 is about 106.7440530009.

The spelling of 1216273 in words is "one million, two hundred sixteen thousand, two hundred seventy-three".