21141243311 has 8 divisors (see below), whose sum is σ = 21367962000. Its totient is φ = 20915656000.

The previous prime is 21141243271. The next prime is 21141243313. The reversal of 21141243311 is 11334214112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21141243311 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 (21141243313) 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, 245246 + ... + 320043.

It is an arithmetic number, because the mean of its divisors is an integer number (2670995250).

Almost surely, 2^21141243311 is an apocalyptic number.

21141243311 is a deficient number, since it is larger than the sum of its proper divisors (226718689).

21141243311 is a wasteful number, since it uses less digits than its factorization.

21141243311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565689.

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

Adding to 21141243311 its reverse (11334214112), we get a palindrome (32475457423).

The spelling of 21141243311 in words is "twenty-one billion, one hundred forty-one million, two hundred forty-three thousand, three hundred eleven".