12220420342 has 32 divisors (see below), whose sum is σ = 20856568320. Its totient is φ = 5323566240.

The previous prime is 12220420337. The next prime is 12220420343. The reversal of 12220420342 is 24302402221.

12220420342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220420343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88233 + ... + 179515.

It is an arithmetic number, because the mean of its divisors is an integer number (651767760).

Almost surely, 2^12220420342 is an apocalyptic number.

12220420342 is a deficient number, since it is larger than the sum of its proper divisors (8636147978).

12220420342 is a wasteful number, since it uses less digits than its factorization.

12220420342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91588.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 12220420342 its reverse (24302402221), we get a palindrome (36522822563).

The spelling of 12220420342 in words is "twelve billion, two hundred twenty million, four hundred twenty thousand, three hundred forty-two".