1222847 has 2 divisors, whose sum is σ = 1222848. Its totient is φ = 1222846.

The previous prime is 1222831. The next prime is 1222853. The reversal of 1222847 is 7482221.

It is a strong prime.

It is an emirp because it is prime and its reverse (7482221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1222847 - 2⁴ = 1222831 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1227847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611423 + 611424.

It is an arithmetic number, because the mean of its divisors is an integer number (611424).

2^1222847 is an apocalyptic number.

1222847 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222847 is an equidigital number, since it uses as much as digits as its factorization.

1222847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1792, while the sum is 26.

The square root of 1222847 is about 1105.8241270654. The cubic root of 1222847 is about 106.9360260435.

The spelling of 1222847 in words is "one million, two hundred twenty-two thousand, eight hundred forty-seven".