12122771 has 8 divisors (see below), whose sum is σ = 12685344. Its totient is φ = 11563200.

The previous prime is 12122723. The next prime is 12122807. The reversal of 12122771 is 17722121.

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 12122771 - 2¹⁸ = 11860627 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12122371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13385 + ... + 14261.

It is an arithmetic number, because the mean of its divisors is an integer number (1585668).

Almost surely, 2^12122771 is an apocalyptic number.

12122771 is a deficient number, since it is larger than the sum of its proper divisors (562573).

12122771 is an equidigital number, since it uses as much as digits as its factorization.

12122771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501.

The product of its digits is 392, while the sum is 23.

The square root of 12122771 is about 3481.7769888377. The cubic root of 12122771 is about 229.7209659630.

Adding to 12122771 its reverse (17722121), we get a palindrome (29844892).

The spelling of 12122771 in words is "twelve million, one hundred twenty-two thousand, seven hundred seventy-one".