1226110666601 has 4 divisors (see below), whose sum is σ = 1244410825872. Its totient is φ = 1207810507332.

The previous prime is 1226110666589. The next prime is 1226110666621. The reversal of 1226110666601 is 1066660116221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1226110666601 - 2⁶ = 1226110666537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226110666621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9150079535 + ... + 9150079668.

It is an arithmetic number, because the mean of its divisors is an integer number (311102706468).

Almost surely, 2^{1226110666601} is an apocalyptic number.

It is an amenable number.

1226110666601 is a deficient number, since it is larger than the sum of its proper divisors (18300159271).

1226110666601 is an equidigital number, since it uses as much as digits as its factorization.

1226110666601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18300159270.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 1226110666601 in words is "one trillion, two hundred twenty-six billion, one hundred ten million, six hundred sixty-six thousand, six hundred one".