1222266649 has 2 divisors, whose sum is σ = 1222266650. Its totient is φ = 1222266648.

The previous prime is 1222266611. The next prime is 1222266659. The reversal of 1222266649 is 9466622221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1203604249 + 18662400 = 34693^2 + 4320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222266649 is a prime.

It is a super-2 number, since 2×1222266649² = 2987871522515378402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1222266659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611133324 + 611133325.

It is an arithmetic number, because the mean of its divisors is an integer number (611133325).

Almost surely, 2^1222266649 is an apocalyptic number.

It is an amenable number.

1222266649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222266649 is an equidigital number, since it uses as much as digits as its factorization.

1222266649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 40.

The square root of 1222266649 is about 34960.9303222898. The cubic root of 1222266649 is about 1069.1910644248.

The spelling of 1222266649 in words is "one billion, two hundred twenty-two million, two hundred sixty-six thousand, six hundred forty-nine".