21301321441 has 8 divisors (see below), whose sum is σ = 21687067584. Its totient is φ = 20918649360.

The previous prime is 21301321429. The next prime is 21301321501. The reversal of 21301321441 is 14412310312.

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

It is not a de Polignac number, because 21301321441 - 2⁷ = 21301321313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21301321241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 754530 + ... + 782251.

It is an arithmetic number, because the mean of its divisors is an integer number (2710883448).

Almost surely, 2^21301321441 is an apocalyptic number.

It is an amenable number.

21301321441 is a deficient number, since it is larger than the sum of its proper divisors (385746143).

21301321441 is a wasteful number, since it uses less digits than its factorization.

21301321441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537031.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21301321441 its reverse (14412310312), we get a palindrome (35713631753).

The spelling of 21301321441 in words is "twenty-one billion, three hundred one million, three hundred twenty-one thousand, four hundred forty-one".