21112342422 has 8 divisors (see below), whose sum is σ = 42224684856. Its totient is φ = 7037447472.

The previous prime is 21112342417. The next prime is 21112342441. The reversal of 21112342422 is 22424321112.

It is a sphenic number, since it is the product of 3 distinct primes.

21112342422 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 21112342392 and 21112342401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1759361863 + ... + 1759361874.

It is an arithmetic number, because the mean of its divisors is an integer number (5278085607).

Almost surely, 2^21112342422 is an apocalyptic number.

21112342422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21112342422 is a wasteful number, since it uses less digits than its factorization.

21112342422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3518723742.

The product of its digits is 1536, while the sum is 24.

Adding to 21112342422 its reverse (22424321112), we get a palindrome (43536663534).

The spelling of 21112342422 in words is "twenty-one billion, one hundred twelve million, three hundred forty-two thousand, four hundred twenty-two".