12122761 has 4 divisors (see below), whose sum is σ = 13854592. Its totient is φ = 10390932.

The previous prime is 12122723. The next prime is 12122807. The reversal of 12122761 is 16722121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12122761 - 2⁹ = 12122249 is a prime.

It is a super-2 number, since 2×12122761² = 293922668526242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12126761) 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, 865905 + ... + 865918.

It is an arithmetic number, because the mean of its divisors is an integer number (3463648).

Almost surely, 2^12122761 is an apocalyptic number.

It is an amenable number.

12122761 is a deficient number, since it is larger than the sum of its proper divisors (1731831).

12122761 is an equidigital number, since it uses as much as digits as its factorization.

12122761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731830.

The product of its digits is 336, while the sum is 22.

The square root of 12122761 is about 3481.7755527891. The cubic root of 12122761 is about 229.7209027979.

Adding to 12122761 its reverse (16722121), we get a palindrome (28844882).

The spelling of 12122761 in words is "twelve million, one hundred twenty-two thousand, seven hundred sixty-one".