12142221142 has 4 divisors (see below), whose sum is σ = 18213331716. Its totient is φ = 6071110570.

The previous prime is 12142221107. The next prime is 12142221193. The reversal of 12142221142 is 24112224121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24112224121 = 37 ⋅651681733.

It is a super-2 number, since 2×12142221142² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3035555284 + ... + 3035555287.

It is an arithmetic number, because the mean of its divisors is an integer number (4553332929).

Almost surely, 2^12142221142 is an apocalyptic number.

12142221142 is a deficient number, since it is larger than the sum of its proper divisors (6071110574).

12142221142 is an equidigital number, since it uses as much as digits as its factorization.

12142221142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6071110573.

The product of its digits is 512, while the sum is 22.

Adding to 12142221142 its reverse (24112224121), we get a palindrome (36254445263).

The spelling of 12142221142 in words is "twelve billion, one hundred forty-two million, two hundred twenty-one thousand, one hundred forty-two".