21412143311 has 4 divisors (see below), whose sum is σ = 23059231272. Its totient is φ = 19765055352.

The previous prime is 21412143307. The next prime is 21412143341. The reversal of 21412143311 is 11334121412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21412143311 - 2² = 21412143307 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 (21412143341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 823543961 + ... + 823543986.

It is an arithmetic number, because the mean of its divisors is an integer number (5764807818).

Almost surely, 2^21412143311 is an apocalyptic number.

21412143311 is a deficient number, since it is larger than the sum of its proper divisors (1647087961).

21412143311 is a wasteful number, since it uses less digits than its factorization.

21412143311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1647087960.

The product of its digits is 576, while the sum is 23.

Adding to 21412143311 its reverse (11334121412), we get a palindrome (32746264723).

The spelling of 21412143311 in words is "twenty-one billion, four hundred twelve million, one hundred forty-three thousand, three hundred eleven".