13121110 has 32 divisors (see below), whose sum is σ = 25349760. Its totient is φ = 4872192.

The previous prime is 13121099. The next prime is 13121117. The reversal of 13121110 is 1112131.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12942 + ... + 13918.

It is an arithmetic number, because the mean of its divisors is an integer number (792180).

Almost surely, 2^13121110 is an apocalyptic number.

13121110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13121110 is a deficient number, since it is larger than the sum of its proper divisors (12228650).

13121110 is a wasteful number, since it uses less digits than its factorization.

13121110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 13121110 is about 3622.3072757567. The cubic root of 13121110 is about 235.8613928026.

Adding to 13121110 its reverse (1112131), we get a palindrome (14233241).

It can be divided in two parts, 13121 and 110, that added together give a palindrome (13231).

The spelling of 13121110 in words is "thirteen million, one hundred twenty-one thousand, one hundred ten".