1226005667 has 2 divisors, whose sum is σ = 1226005668. Its totient is φ = 1226005666.

The previous prime is 1226005631. The next prime is 1226005687. The reversal of 1226005667 is 7665006221.

It is a strong prime.

It is an emirp because it is prime and its reverse (7665006221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1226005667 - 2⁶ = 1226005603 is a prime.

It is a super-2 number, since 2×1226005667² = 3006179791032229778, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1226005687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613002833 + 613002834.

It is an arithmetic number, because the mean of its divisors is an integer number (613002834).

Almost surely, 2^1226005667 is an apocalyptic number.

1226005667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226005667 is an equidigital number, since it uses as much as digits as its factorization.

1226005667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 1226005667 is about 35014.3637240490. The cubic root of 1226005667 is about 1070.2802034961.

The spelling of 1226005667 in words is "one billion, two hundred twenty-six million, five thousand, six hundred sixty-seven".