21422641143 has 8 divisors (see below), whose sum is σ = 28583185648. Its totient is φ = 14271928704.

The previous prime is 21422641129. The next prime is 21422641147. The reversal of 21422641143 is 34114622412.

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

It is not a de Polignac number, because 21422641143 - 2¹⁴ = 21422624759 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21422641143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21422641147) 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, 2452930 + ... + 2461647.

It is an arithmetic number, because the mean of its divisors is an integer number (3572898206).

Almost surely, 2^21422641143 is an apocalyptic number.

21422641143 is a deficient number, since it is larger than the sum of its proper divisors (7160544505).

21422641143 is a wasteful number, since it uses less digits than its factorization.

21422641143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4916033.

The product of its digits is 9216, while the sum is 30.

The spelling of 21422641143 in words is "twenty-one billion, four hundred twenty-two million, six hundred forty-one thousand, one hundred forty-three".