12722111 has 8 divisors (see below), whose sum is σ = 12994560. Its totient is φ = 12451672.

The previous prime is 12722107. The next prime is 12722119. The reversal of 12722111 is 11122721.

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 12722111 - 2² = 12722107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12722111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12722119) 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, 22316 + ... + 22878.

It is an arithmetic number, because the mean of its divisors is an integer number (1624320).

Almost surely, 2^12722111 is an apocalyptic number.

12722111 is a deficient number, since it is larger than the sum of its proper divisors (272449).

12722111 is an equidigital number, since it uses as much as digits as its factorization.

12722111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005.

The product of its digits is 56, while the sum is 17.

The square root of 12722111 is about 3566.8068352519. The cubic root of 12722111 is about 233.4459766776.

Adding to 12722111 its reverse (11122721), we get a palindrome (23844832).

The spelling of 12722111 in words is "twelve million, seven hundred twenty-two thousand, one hundred eleven".