12213022142 has 4 divisors (see below), whose sum is σ = 18319533216. Its totient is φ = 6106511070.

The previous prime is 12213022121. The next prime is 12213022169. The reversal of 12213022142 is 24122031221.

It is a semiprime because it is the product of two primes.

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, 3053255534 + ... + 3053255537.

It is an arithmetic number, because the mean of its divisors is an integer number (4579883304).

Almost surely, 2^12213022142 is an apocalyptic number.

12213022142 is a deficient number, since it is larger than the sum of its proper divisors (6106511074).

12213022142 is an equidigital number, since it uses as much as digits as its factorization.

12213022142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6106511073.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12213022142 its reverse (24122031221), we get a palindrome (36335053363).

The spelling of 12213022142 in words is "twelve billion, two hundred thirteen million, twenty-two thousand, one hundred forty-two".