12227761 has 8 divisors (see below), whose sum is σ = 15049664. Its totient is φ = 9674640.

The previous prime is 12227753. The next prime is 12227779. The reversal of 12227761 is 16772221.

12227761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12227761 - 2³ = 12227753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12227711) 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, 67095 + ... + 67276.

It is an arithmetic number, because the mean of its divisors is an integer number (1881208).

Almost surely, 2^12227761 is an apocalyptic number.

It is an amenable number.

12227761 is a deficient number, since it is larger than the sum of its proper divisors (2821903).

12227761 is a wasteful number, since it uses less digits than its factorization.

12227761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134391.

The product of its digits is 2352, while the sum is 28.

The square root of 12227761 is about 3496.8215567855. The cubic root of 12227761 is about 230.3822314716.

Adding to 12227761 its reverse (16772221), we get a palindrome (28999982).

The spelling of 12227761 in words is "twelve million, two hundred twenty-seven thousand, seven hundred sixty-one".