1227222271 has 8 divisors (see below), whose sum is σ = 1339164288. Its totient is φ = 1115343000.

The previous prime is 1227222223. The next prime is 1227222287. The reversal of 1227222271 is 1722227221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1227222271 - 2⁹ = 1227221759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227222671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31366 + ... + 58636.

It is an arithmetic number, because the mean of its divisors is an integer number (167395536).

Almost surely, 2^1227222271 is an apocalyptic number.

1227222271 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1227222271 is a deficient number, since it is larger than the sum of its proper divisors (111942017).

1227222271 is a wasteful number, since it uses less digits than its factorization.

1227222271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31373.

The product of its digits is 3136, while the sum is 28.

The square root of 1227222271 is about 35031.7323436909. The cubic root of 1227222271 is about 1070.6341106984.

Adding to 1227222271 its reverse (1722227221), we get a palindrome (2949449492).

It can be divided in two parts, 12272 and 22271, that added together give a palindrome (34543).

The spelling of 1227222271 in words is "one billion, two hundred twenty-seven million, two hundred twenty-two thousand, two hundred seventy-one".