1227449101 has 4 divisors (see below), whose sum is σ = 1250608572. Its totient is φ = 1204289632.

The previous prime is 1227449089. The next prime is 1227449159. The reversal of 1227449101 is 1019447221.

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 319873225 + 907575876 = 17885^2 + 30126^2 .

It is a cyclic number.

It is not a de Polignac number, because 1227449101 - 2⁷ = 1227448973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227449701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11579656 + ... + 11579761.

It is an arithmetic number, because the mean of its divisors is an integer number (312652143).

Almost surely, 2^1227449101 is an apocalyptic number.

It is an amenable number.

1227449101 is a deficient number, since it is larger than the sum of its proper divisors (23159471).

1227449101 is an equidigital number, since it uses as much as digits as its factorization.

1227449101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23159470.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1227449101 is about 35034.9696874423. The cubic root of 1227449101 is about 1070.7000691316.

The spelling of 1227449101 in words is "one billion, two hundred twenty-seven million, four hundred forty-nine thousand, one hundred one".