15123122226 has 64 divisors (see below), whose sum is σ = 34390863360. Its totient is φ = 4923884160.

The previous prime is 15123122213. The next prime is 15123122227. The reversal of 15123122226 is 62222132151.

15123122226 is a `hidden beast` number, since 1 + 512 + 3 + 122 + 2 + 26 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 15123122226.

It is not an unprimeable number, because it can be changed into a prime (15123122227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1316580 + ... + 1328016.

It is an arithmetic number, because the mean of its divisors is an integer number (537357240).

Almost surely, 2^15123122226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15123122226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17195431680).

15123122226 is an abundant number, since it is smaller than the sum of its proper divisors (19267741134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15123122226 is a wasteful number, since it uses less digits than its factorization.

15123122226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12016 (or 12010 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

Adding to 15123122226 its reverse (62222132151), we get a palindrome (77345254377).

The spelling of 15123122226 in words is "fifteen billion, one hundred twenty-three million, one hundred twenty-two thousand, two hundred twenty-six".