1226222766577 has 4 divisors (see below), whose sum is σ = 1226225335716. Its totient is φ = 1226220197440.

The previous prime is 1226222766563. The next prime is 1226222766611. The reversal of 1226222766577 is 7756672226221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 243822638656 + 982400127921 = 493784^2 + 991161^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1226222766577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226222766557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334324 + ... + 1601317.

It is an arithmetic number, because the mean of its divisors is an integer number (306556333929).

Almost surely, 2^{1226222766577} is an apocalyptic number.

It is an amenable number.

1226222766577 is a deficient number, since it is larger than the sum of its proper divisors (2569139).

1226222766577 is an equidigital number, since it uses as much as digits as its factorization.

1226222766577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2569138.

The product of its digits is 11854080, while the sum is 55.

The spelling of 1226222766577 in words is "one trillion, two hundred twenty-six billion, two hundred twenty-two million, seven hundred sixty-six thousand, five hundred seventy-seven".