12522214442 has 32 divisors (see below), whose sum is σ = 20496585600. Its totient is φ = 5715033408.

The previous prime is 12522214403. The next prime is 12522214447. The reversal of 12522214442 is 24441222521.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (12522214447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 525008 + ... + 548340.

It is an arithmetic number, because the mean of its divisors is an integer number (640518300).

Almost surely, 2^12522214442 is an apocalyptic number.

12522214442 is a deficient number, since it is larger than the sum of its proper divisors (7974371158).

12522214442 is a wasteful number, since it uses less digits than its factorization.

12522214442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23870.

The product of its digits is 10240, while the sum is 29.

Adding to 12522214442 its reverse (24441222521), we get a palindrome (36963436963).

The spelling of 12522214442 in words is "twelve billion, five hundred twenty-two million, two hundred fourteen thousand, four hundred forty-two".