22222420342 has 4 divisors (see below), whose sum is σ = 33333630516. Its totient is φ = 11111210170.

The previous prime is 22222420327. The next prime is 22222420351. The reversal of 22222420342 is 24302422222.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555605084 + ... + 5555605087.

It is an arithmetic number, because the mean of its divisors is an integer number (8333407629).

Almost surely, 2^22222420342 is an apocalyptic number.

22222420342 is a deficient number, since it is larger than the sum of its proper divisors (11111210174).

22222420342 is a wasteful number, since it uses less digits than its factorization.

22222420342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11111210173.

The product of its (nonzero) digits is 6144, while the sum is 25.

Adding to 22222420342 its reverse (24302422222), we get a palindrome (46524842564).

The spelling of 22222420342 in words is "twenty-two billion, two hundred twenty-two million, four hundred twenty thousand, three hundred forty-two".