21342001441 has 8 divisors (see below), whose sum is σ = 21726657000. Its totient is φ = 20960565120.

The previous prime is 21342001381. The next prime is 21342001451. The reversal of 21342001441 is 14410024312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 984704400 + 20357297041 = 31380^2 + 142679^2 .

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 21342001441 - 2¹⁵ = 21341968673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21342001451) 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, 791430 + ... + 817951.

It is an arithmetic number, because the mean of its divisors is an integer number (2715832125).

Almost surely, 2^21342001441 is an apocalyptic number.

It is an amenable number.

21342001441 is a deficient number, since it is larger than the sum of its proper divisors (384655559).

21342001441 is a wasteful number, since it uses less digits than its factorization.

21342001441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1609619.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21342001441 its reverse (14410024312), we get a palindrome (35752025753).

The spelling of 21342001441 in words is "twenty-one billion, three hundred forty-two million, one thousand, four hundred forty-one".