21412231421143 has 16 divisors (see below), whose sum is σ = 21864715310592. Its totient is φ = 20964808800000.

The previous prime is 21412231421081. The next prime is 21412231421149. The reversal of 21412231421143 is 34112413221412.

It is a cyclic number.

It is not a de Polignac number, because 21412231421143 - 2³⁷ = 21274792467671 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 (21412231421149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6854503 + ... + 9476743.

It is an arithmetic number, because the mean of its divisors is an integer number (1366544706912).

Almost surely, 2^{21412231421143} is an apocalyptic number.

21412231421143 is a deficient number, since it is larger than the sum of its proper divisors (452483889449).

21412231421143 is a wasteful number, since it uses less digits than its factorization.

21412231421143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2623206.

The product of its digits is 9216, while the sum is 31.

Adding to 21412231421143 its reverse (34112413221412), we get a palindrome (55524644642555).

The spelling of 21412231421143 in words is "twenty-one trillion, four hundred twelve billion, two hundred thirty-one million, four hundred twenty-one thousand, one hundred forty-three".