21023224142143 has 8 divisors (see below), whose sum is σ = 21071747560896. Its totient is φ = 20974754791200.

The previous prime is 21023224142111. The next prime is 21023224142159. The reversal of 21023224142143 is 34124142232012.

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

It is a cyclic number.

It is not a de Polignac number, because 21023224142143 - 2⁵ = 21023224142111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21023224143143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12738343 + ... + 14293768.

It is an arithmetic number, because the mean of its divisors is an integer number (2633968445112).

Almost surely, 2^{21023224142143} is an apocalyptic number.

21023224142143 is a deficient number, since it is larger than the sum of its proper divisors (48523418753).

21023224142143 is a wasteful number, since it uses less digits than its factorization.

21023224142143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27033905.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 21023224142143 its reverse (34124142232012), we get a palindrome (55147366374155).

The spelling of 21023224142143 in words is "twenty-one trillion, twenty-three billion, two hundred twenty-four million, one hundred forty-two thousand, one hundred forty-three".