21143224141 has 8 divisors (see below), whose sum is σ = 23299152800. Its totient is φ = 19062942192.

The previous prime is 21143224127. The next prime is 21143224243. The reversal of 21143224141 is 14142234112.

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 21143224141 - 2³¹ = 18995740493 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 (21143264141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18911091 + ... + 18912208.

It is an arithmetic number, because the mean of its divisors is an integer number (2912394100).

Almost surely, 2^21143224141 is an apocalyptic number.

It is an amenable number.

21143224141 is a deficient number, since it is larger than the sum of its proper divisors (2155928659).

21143224141 is a wasteful number, since it uses less digits than its factorization.

21143224141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37823355.

The product of its digits is 1536, while the sum is 25.

Adding to 21143224141 its reverse (14142234112), we get a palindrome (35285458253).

The spelling of 21143224141 in words is "twenty-one billion, one hundred forty-three million, two hundred twenty-four thousand, one hundred forty-one".