21320023224142 has 8 divisors (see below), whose sum is σ = 32384845404000. Its totient is φ = 10525074756144.

The previous prime is 21320023224133. The next prime is 21320023224173. The reversal of 21320023224142 is 24142232002312.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21320023224142.

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, 67468427767 + ... + 67468428082.

It is an arithmetic number, because the mean of its divisors is an integer number (4048105675500).

Almost surely, 2^{21320023224142} is an apocalyptic number.

21320023224142 is a deficient number, since it is larger than the sum of its proper divisors (11064822179858).

21320023224142 is a wasteful number, since it uses less digits than its factorization.

21320023224142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134936855930.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 21320023224142 its reverse (24142232002312), we get a palindrome (45462255226454).

The spelling of 21320023224142 in words is "twenty-one trillion, three hundred twenty billion, twenty-three million, two hundred twenty-four thousand, one hundred forty-two".