12272811 has 4 divisors (see below), whose sum is σ = 16363752. Its totient is φ = 8181872.

The previous prime is 12272801. The next prime is 12272831. The reversal of 12272811 is 11827221.

12272811 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12272811 - 2⁵ = 12272779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12272801) 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, 2045466 + ... + 2045471.

It is an arithmetic number, because the mean of its divisors is an integer number (4090938).

Almost surely, 2^12272811 is an apocalyptic number.

12272811 is a deficient number, since it is larger than the sum of its proper divisors (4090941).

12272811 is an equidigital number, since it uses as much as digits as its factorization.

12272811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4090940.

The product of its digits is 448, while the sum is 24.

The square root of 12272811 is about 3503.2571986653. The cubic root of 12272811 is about 230.6648124951.

The spelling of 12272811 in words is "twelve million, two hundred seventy-two thousand, eight hundred eleven".