13102121 has 8 divisors (see below), whose sum is σ = 13964040. Its totient is φ = 12250368.

The previous prime is 13102099. The next prime is 13102139. The reversal of 13102121 is 12120131.

It can be written as a sum of positive squares in 4 ways, for example, as 6528025 + 6574096 = 2555^2 + 2564^2 .

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 13102121 - 2¹⁰ = 13101097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13102151) 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, 215 + ... + 5123.

It is an arithmetic number, because the mean of its divisors is an integer number (1745505).

Almost surely, 2^13102121 is an apocalyptic number.

It is an amenable number.

13102121 is a deficient number, since it is larger than the sum of its proper divisors (861919).

13102121 is a wasteful number, since it uses less digits than its factorization.

13102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5083.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 13102121 is about 3619.6852073074. The cubic root of 13102121 is about 235.7475575579.

Adding to 13102121 its reverse (12120131), we get a palindrome (25222252).

The spelling of 13102121 in words is "thirteen million, one hundred two thousand, one hundred twenty-one".