12213122222442 has 16 divisors (see below), whose sum is σ = 24429323607840. Its totient is φ = 4070527546992.

The previous prime is 12213122222381. The next prime is 12213122222479. The reversal of 12213122222442 is 24422222131221.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128246892 + ... + 128342087.

It is an arithmetic number, because the mean of its divisors is an integer number (1526832725490).

Almost surely, 2^{12213122222442} is an apocalyptic number.

12213122222442 is an abundant number, since it is smaller than the sum of its proper divisors (12216201385398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12213122222442 is a wasteful number, since it uses less digits than its factorization.

12213122222442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256596917.

The product of its digits is 12288, while the sum is 30.

Adding to 12213122222442 its reverse (24422222131221), we get a palindrome (36635344353663).

The spelling of 12213122222442 in words is "twelve trillion, two hundred thirteen billion, one hundred twenty-two million, two hundred twenty-two thousand, four hundred forty-two".