1220803 has 2 divisors, whose sum is σ = 1220804. Its totient is φ = 1220802.

The previous prime is 1220801. The next prime is 1220819. The reversal of 1220803 is 3080221.

It is a happy number.

It is an a-pointer prime, because the next prime (1220819) can be obtained adding 1220803 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220803 - 2¹ = 1220801 is a prime.

Together with 1220801, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1220801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610401 + 610402.

It is an arithmetic number, because the mean of its divisors is an integer number (610402).

2^1220803 is an apocalyptic number.

1220803 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220803 is an equidigital number, since it uses as much as digits as its factorization.

1220803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1220803 is about 1104.8995429450. The cubic root of 1220803 is about 106.8764112988.

The spelling of 1220803 in words is "one million, two hundred twenty thousand, eight hundred three".