13155122 has 4 divisors (see below), whose sum is σ = 19732686. Its totient is φ = 6577560.

The previous prime is 13155083. The next prime is 13155133. The reversal of 13155122 is 22155131.

It is a happy number.

13155122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22155131 = 17 ⋅1303243.

It can be written as a sum of positive squares in only one way, i.e., 8231161 + 4923961 = 2869^2 + 2219^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13155094 and 13155103.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3288779 + ... + 3288782.

Almost surely, 2^13155122 is an apocalyptic number.

13155122 is a deficient number, since it is larger than the sum of its proper divisors (6577564).

13155122 is an equidigital number, since it uses as much as digits as its factorization.

13155122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6577563.

The product of its digits is 300, while the sum is 20.

The square root of 13155122 is about 3626.9990350150. Note that the first 3 decimals coincide. The cubic root of 13155122 is about 236.0650136884.

Subtracting 13155122 from its reverse (22155131), we obtain a palindrome (9000009).

The spelling of 13155122 in words is "thirteen million, one hundred fifty-five thousand, one hundred twenty-two".