1222993 has 2 divisors, whose sum is σ = 1222994. Its totient is φ = 1222992.

The previous prime is 1222967. The next prime is 1223003. The reversal of 1222993 is 3992221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1140624 + 82369 = 1068^2 + 287^2 .

It is an emirp because it is prime and its reverse (3992221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222993 is a prime.

It is equal to p₉₄₅₅₅ and since 1222993 and 94555 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (1222913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611496 + 611497.

It is an arithmetic number, because the mean of its divisors is an integer number (611497).

2^1222993 is an apocalyptic number.

It is an amenable number.

1222993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222993 is an equidigital number, since it uses as much as digits as its factorization.

1222993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 28.

The square root of 1222993 is about 1105.8901392091. The cubic root of 1222993 is about 106.9402816968.

It can be divided in two parts, 12 and 22993, that added together give a triangular number (23005 = T₂₁₄).

The spelling of 1222993 in words is "one million, two hundred twenty-two thousand, nine hundred ninety-three".