21214144143 has 24 divisors (see below), whose sum is σ = 31325112000. Its totient is φ = 13828368384.

The previous prime is 21214144129. The next prime is 21214144151. The reversal of 21214144143 is 34144141212.

21214144143 is a `hidden beast` number, since 2 + 1 + 214 + 1 + 441 + 4 + 3 = 666.

It is not a de Polignac number, because 21214144143 - 2²¹ = 21212046991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21214144153) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 419823 + ... + 467631.

It is an arithmetic number, because the mean of its divisors is an integer number (1305213000).

Almost surely, 2^21214144143 is an apocalyptic number.

21214144143 is a deficient number, since it is larger than the sum of its proper divisors (10110967857).

21214144143 is a wasteful number, since it uses less digits than its factorization.

21214144143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48911 (or 48908 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

Adding to 21214144143 its reverse (34144141212), we get a palindrome (55358285355).

The spelling of 21214144143 in words is "twenty-one billion, two hundred fourteen million, one hundred forty-four thousand, one hundred forty-three".