15216122 has 16 divisors (see below), whose sum is σ = 24276672. Its totient is φ = 7128000.

The previous prime is 15216079. The next prime is 15216143. The reversal of 15216122 is 22161251.

It is a junction number, because it is equal to n+sod(n) for n = 15216094 and 15216103.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7643 + ... + 9425.

It is an arithmetic number, because the mean of its divisors is an integer number (1517292).

Almost surely, 2^15216122 is an apocalyptic number.

15216122 is a deficient number, since it is larger than the sum of its proper divisors (9060550).

15216122 is a wasteful number, since it uses less digits than its factorization.

15216122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053.

The product of its digits is 240, while the sum is 20.

The square root of 15216122 is about 3900.7847928334. The cubic root of 15216122 is about 247.8000143745.

Adding to 15216122 its reverse (22161251), we get a palindrome (37377373).

The spelling of 15216122 in words is "fifteen million, two hundred sixteen thousand, one hundred twenty-two".