13766121 has 24 divisors (see below), whose sum is σ = 21056256. Its totient is φ = 8648640.

The previous prime is 13766117. The next prime is 13766147. The reversal of 13766121 is 12166731.

13766121 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13766121 - 2² = 13766117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13766101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14656 + ... + 15566.

It is an arithmetic number, because the mean of its divisors is an integer number (877344).

Almost surely, 2^13766121 is an apocalyptic number.

It is an amenable number.

13766121 is a deficient number, since it is larger than the sum of its proper divisors (7290135).

13766121 is a wasteful number, since it uses less digits than its factorization.

13766121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013 (or 1010 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 13766121 is about 3710.2723619702. The cubic root of 13766121 is about 239.6645835342.

The spelling of 13766121 in words is "thirteen million, seven hundred sixty-six thousand, one hundred twenty-one".