1222665011 has 2 divisors, whose sum is σ = 1222665012. Its totient is φ = 1222665010.

The previous prime is 1222664959. The next prime is 1222665043. The reversal of 1222665011 is 1105662221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1222665011 - 2²² = 1218470707 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222665061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611332505 + 611332506.

It is an arithmetic number, because the mean of its divisors is an integer number (611332506).

Almost surely, 2^1222665011 is an apocalyptic number.

1222665011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222665011 is an equidigital number, since it uses as much as digits as its factorization.

1222665011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1222665011 is about 34966.6271035683. The cubic root of 1222665011 is about 1069.3072089739.

The spelling of 1222665011 in words is "one billion, two hundred twenty-two million, six hundred sixty-five thousand, eleven".