21343220411 has 8 divisors (see below), whose sum is σ = 22034002944. Its totient is φ = 20652581160.

The previous prime is 21343220383. The next prime is 21343220419. The reversal of 21343220411 is 11402234312.

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 21343220411 - 2⁶ = 21343220347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21343220419) 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, 324650 + ... + 384816.

It is an arithmetic number, because the mean of its divisors is an integer number (2754250368).

Almost surely, 2^21343220411 is an apocalyptic number.

21343220411 is a deficient number, since it is larger than the sum of its proper divisors (690782533).

21343220411 is a wasteful number, since it uses less digits than its factorization.

21343220411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71641.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21343220411 its reverse (11402234312), we get a palindrome (32745454723).

The spelling of 21343220411 in words is "twenty-one billion, three hundred forty-three million, two hundred twenty thousand, four hundred eleven".