13122111 has 8 divisors (see below), whose sum is σ = 17826480. Its totient is φ = 8582912.

The previous prime is 13122073. The next prime is 13122119. The reversal of 13122111 is 11122131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13122111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13122119) 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 7 ways as a sum of consecutive naturals, for example, 41106 + ... + 41423.

It is an arithmetic number, because the mean of its divisors is an integer number (2228310).

Almost surely, 2^13122111 is an apocalyptic number.

13122111 is a deficient number, since it is larger than the sum of its proper divisors (4704369).

13122111 is an equidigital number, since it uses as much as digits as its factorization.

13122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82585.

The product of its digits is 12, while the sum is 12.

The square root of 13122111 is about 3622.4454447238. The cubic root of 13122111 is about 235.8673905485.

Adding to 13122111 its reverse (11122131), we get a palindrome (24244242).

The spelling of 13122111 in words is "thirteen million, one hundred twenty-two thousand, one hundred eleven".