12122772 has 24 divisors (see below), whose sum is σ = 28348992. Its totient is φ = 4032000.

The previous prime is 12122723. The next prime is 12122807. The reversal of 12122772 is 27722121.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6772 + ... + 8372.

It is an arithmetic number, because the mean of its divisors is an integer number (1181208).

Almost surely, 2^12122772 is an apocalyptic number.

12122772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12122772 is an abundant number, since it is smaller than the sum of its proper divisors (16226220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12122772 is a wasteful number, since it uses less digits than its factorization.

12122772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2239 (or 2237 counting only the distinct ones).

The product of its digits is 784, while the sum is 24.

The square root of 12122772 is about 3481.7771324426. Note that the first 3 decimals coincide. The cubic root of 12122772 is about 229.7209722795.

Adding to 12122772 its reverse (27722121), we get a palindrome (39844893).

The spelling of 12122772 in words is "twelve million, one hundred twenty-two thousand, seven hundred seventy-two".