15222123 has 48 divisors (see below), whose sum is σ = 27158976. Its totient is φ = 8017920.

The previous prime is 15222101. The next prime is 15222131. The reversal of 15222123 is 32122251.

15222123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15222123 - 2⁵ = 15222091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15222096 and 15222105.

It is not an unprimeable number, because it can be changed into a prime (15222143) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65215 + ... + 65447.

It is an arithmetic number, because the mean of its divisors is an integer number (565812).

Almost surely, 2^15222123 is an apocalyptic number.

15222123 is a deficient number, since it is larger than the sum of its proper divisors (11936853).

15222123 is a wasteful number, since it uses less digits than its factorization.

15222123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 321 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 15222123 is about 3901.5539211960. The cubic root of 15222123 is about 247.8325862401.

Adding to 15222123 its reverse (32122251), we get a palindrome (47344374).

The spelling of 15222123 in words is "fifteen million, two hundred twenty-two thousand, one hundred twenty-three".