1227091 has 4 divisors (see below), whose sum is σ = 1255672. Its totient is φ = 1198512.

The previous prime is 1227053. The next prime is 1227101. The reversal of 1227091 is 1907221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1907221 = 797 ⋅2393.

It is a cyclic number.

It is not a de Polignac number, because 1227091 - 2¹⁹ = 702803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1227491) 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, 14226 + ... + 14311.

It is an arithmetic number, because the mean of its divisors is an integer number (313918).

2^1227091 is an apocalyptic number.

1227091 is a deficient number, since it is larger than the sum of its proper divisors (28581).

1227091 is an equidigital number, since it uses as much as digits as its factorization.

1227091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28580.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 1227091 is about 1107.7413958140. The cubic root of 1227091 is about 107.0595935538.

The spelling of 1227091 in words is "one million, two hundred twenty-seven thousand, ninety-one".