1222009949 has 2 divisors, whose sum is σ = 1222009950. Its totient is φ = 1222009948.

The previous prime is 1222009907. The next prime is 1222009967. The reversal of 1222009949 is 9499002221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1083594724 + 138415225 = 32918^2 + 11765^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222009949 - 2¹² = 1222005853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222009969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611004974 + 611004975.

It is an arithmetic number, because the mean of its divisors is an integer number (611004975).

Almost surely, 2^1222009949 is an apocalyptic number.

It is an amenable number.

1222009949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222009949 is an equidigital number, since it uses as much as digits as its factorization.

1222009949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 1222009949 is about 34957.2588885342. The cubic root of 1222009949 is about 1069.1162088105.

The spelling of 1222009949 in words is "one billion, two hundred twenty-two million, nine thousand, nine hundred forty-nine".