121227271 has 16 divisors (see below), whose sum is σ = 135419040. Its totient is φ = 107585920.

The previous prime is 121227263. The next prime is 121227287. The reversal of 121227271 is 172722121.

It is a cyclic number.

It is not a de Polignac number, because 121227271 - 2³ = 121227263 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 (121227251) 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 15 ways as a sum of consecutive naturals, for example, 156441 + ... + 157213.

It is an arithmetic number, because the mean of its divisors is an integer number (8463690).

Almost surely, 2^121227271 is an apocalyptic number.

121227271 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121227271 is a deficient number, since it is larger than the sum of its proper divisors (14191769).

121227271 is a wasteful number, since it uses less digits than its factorization.

121227271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106.

The product of its digits is 784, while the sum is 25.

The square root of 121227271 is about 11010.3256536762. The cubic root of 121227271 is about 494.9182206837.

Adding to 121227271 its reverse (172722121), we get a palindrome (293949392).

The spelling of 121227271 in words is "one hundred twenty-one million, two hundred twenty-seven thousand, two hundred seventy-one".