15120215422 has 16 divisors (see below), whose sum is σ = 25020695952. Its totient is φ = 6808351680.

The previous prime is 15120215389. The next prime is 15120215423. The reversal of 15120215422 is 22451202151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15120215423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7090968 + ... + 7093099.

It is an arithmetic number, because the mean of its divisors is an integer number (1563793497).

Almost surely, 2^15120215422 is an apocalyptic number.

15120215422 is a deficient number, since it is larger than the sum of its proper divisors (9900480530).

15120215422 is a wasteful number, since it uses less digits than its factorization.

15120215422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14184123.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 15120215422 its reverse (22451202151), we get a palindrome (37571417573).

The spelling of 15120215422 in words is "fifteen billion, one hundred twenty million, two hundred fifteen thousand, four hundred twenty-two".