12277122 has 64 divisors (see below), whose sum is σ = 29635200. Its totient is φ = 3340800.

The previous prime is 12277061. The next prime is 12277127. The reversal of 12277122 is 22177221.

12277122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12277092 and 12277101.

It is not an unprimeable number, because it can be changed into a prime (12277127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35004 + ... + 35352.

It is an arithmetic number, because the mean of its divisors is an integer number (463050).

Almost surely, 2^12277122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12277122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14817600).

12277122 is an abundant number, since it is smaller than the sum of its proper divisors (17358078).

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

12277122 is a wasteful number, since it uses less digits than its factorization.

12277122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419.

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

The square root of 12277122 is about 3503.8724291846. The cubic root of 12277122 is about 230.6918174357.

Subtracting 12277122 from its reverse (22177221), we obtain a palindrome (9900099).

The spelling of 12277122 in words is "twelve million, two hundred seventy-seven thousand, one hundred twenty-two".