12222312146 has 64 divisors (see below), whose sum is σ = 21515155200. Its totient is φ = 5145845760.

The previous prime is 12222312103. The next prime is 12222312149. The reversal of 12222312146 is 64121322221.

It is a super-3 number, since 3×12222312146³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12222312149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7218476 + ... + 7220168.

It is an arithmetic number, because the mean of its divisors is an integer number (336174300).

Almost surely, 2^12222312146 is an apocalyptic number.

12222312146 is a deficient number, since it is larger than the sum of its proper divisors (9292843054).

12222312146 is a wasteful number, since it uses less digits than its factorization.

12222312146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019.

The product of its digits is 2304, while the sum is 26.

Adding to 12222312146 its reverse (64121322221), we get a palindrome (76343634367).

The spelling of 12222312146 in words is "twelve billion, two hundred twenty-two million, three hundred twelve thousand, one hundred forty-six".