13202121 has 8 divisors (see below), whose sum is σ = 17677440. Its totient is φ = 8764112.

The previous prime is 13202117. The next prime is 13202143. The reversal of 13202121 is 12120231.

13202121 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 13202121 - 2² = 13202117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13202097 and 13202106.

It is not an unprimeable number, because it can be changed into a prime (13202921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8490 + ... + 9923.

It is an arithmetic number, because the mean of its divisors is an integer number (2209680).

Almost surely, 2^13202121 is an apocalyptic number.

It is an amenable number.

13202121 is a deficient number, since it is larger than the sum of its proper divisors (4475319).

13202121 is a wasteful number, since it uses less digits than its factorization.

13202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18655.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 13202121 is about 3633.4723062107. The cubic root of 13202121 is about 236.3458075623.

Adding to 13202121 its reverse (12120231), we get a palindrome (25322352).

The spelling of 13202121 in words is "thirteen million, two hundred two thousand, one hundred twenty-one".