1226445001 has 4 divisors (see below), whose sum is σ = 1237696900. Its totient is φ = 1215193104.

The previous prime is 1226444993. The next prime is 1226445029. The reversal of 1226445001 is 1005446221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1005446221 = 13 ⋅77342017.

It can be written as a sum of positive squares in 2 ways, for example, as 591656976 + 634788025 = 24324^2 + 25195^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226445001 - 2³ = 1226444993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226445071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5625786 + ... + 5626003.

It is an arithmetic number, because the mean of its divisors is an integer number (309424225).

Almost surely, 2^1226445001 is an apocalyptic number.

It is an amenable number.

1226445001 is a deficient number, since it is larger than the sum of its proper divisors (11251899).

1226445001 is a wasteful number, since it uses less digits than its factorization.

1226445001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11251898.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1226445001 is about 35020.6367874715. The cubic root of 1226445001 is about 1070.4080317057.

The spelling of 1226445001 in words is "one billion, two hundred twenty-six million, four hundred forty-five thousand, one".