21301132416601 has 8 divisors (see below), whose sum is σ = 22072319224200. Its totient is φ = 20532389942400.

The previous prime is 21301132416589. The next prime is 21301132416611. The reversal of 21301132416601 is 10661423110312.

It can be written as a sum of positive squares in 4 ways, for example, as 983359806025 + 20317772610576 = 991645^2 + 4507524^2 .

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 21301132416601 - 2²⁹ = 21300595545689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21301132416611) 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, 611065606 + ... + 611100463.

It is an arithmetic number, because the mean of its divisors is an integer number (2759039903025).

Almost surely, 2^{21301132416601} is an apocalyptic number.

It is an amenable number.

21301132416601 is a deficient number, since it is larger than the sum of its proper divisors (771186807599).

21301132416601 is a wasteful number, since it uses less digits than its factorization.

21301132416601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222166699.

The product of its (nonzero) digits is 5184, while the sum is 31.

Adding to 21301132416601 its reverse (10661423110312), we get a palindrome (31962555526913).

The spelling of 21301132416601 in words is "twenty-one trillion, three hundred one billion, one hundred thirty-two million, four hundred sixteen thousand, six hundred one".