13696121 has 4 divisors (see below), whose sum is σ = 13850100. Its totient is φ = 13542144.

The previous prime is 13696117. The next prime is 13696157. The reversal of 13696121 is 12169631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9369721 + 4326400 = 3061^2 + 2080^2 .

It is a cyclic number.

It is not a de Polignac number, because 13696121 - 2² = 13696117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13696021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76856 + ... + 77033.

It is an arithmetic number, because the mean of its divisors is an integer number (3462525).

Almost surely, 2^13696121 is an apocalyptic number.

It is an amenable number.

13696121 is a deficient number, since it is larger than the sum of its proper divisors (153979).

13696121 is an equidigital number, since it uses as much as digits as its factorization.

13696121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153978.

The product of its digits is 1944, while the sum is 29.

The square root of 13696121 is about 3700.8270697237. The cubic root of 13696121 is about 239.2576657743.

The spelling of 13696121 in words is "thirteen million, six hundred ninety-six thousand, one hundred twenty-one".