15122 has 4 divisors (see below), whose sum is σ = 22686.
Its totient is φ = 7560.
The previous prime is 15121. The next prime is 15131. The reversal of 15122 is 22151.
15122 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: 22151 = 17 ⋅1303.
It can be written as a sum of positive squares in only one way, i.e., 14161 + 961 = 119^2 + 31^2
It is not an unprimeable number, because it can be changed into a prime (15121) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3779 + ... + 3782.
215122 is an apocalyptic number.
15122 is a deficient number, since it is larger than the sum of its proper divisors (7564).
15122 is an equidigital number, since it uses as much as digits as its factorization.
15122 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7563.
The product of its digits is 20, while the sum is 11.
The square root of 15122 is about 122.9715414232.
The cubic root of 15122 is about 24.7288020379.
Adding to 15122 its reverse (22151), we get a palindrome (37273).
It can be divided in two parts, 15 and 122, that multiplied together give a triangular number (1830 = T60).
The spelling of 15122 in words is "fifteen thousand, one hundred twenty-two".