21330224561001 has 8 divisors (see below), whose sum is σ = 28440787399360. Its totient is φ = 14219905714992.

The previous prime is 21330224560943. The next prime is 21330224561003. The reversal of 21330224561001 is 10016542203312.

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

It is not a de Polignac number, because 21330224561001 - 2¹⁰ = 21330224559977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21330224561001.

It is not an unprimeable number, because it can be changed into a prime (21330224561003) 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, 60794005 + ... + 61143858.

It is an arithmetic number, because the mean of its divisors is an integer number (3555098424920).

Almost surely, 2^{21330224561001} is an apocalyptic number.

It is an amenable number.

21330224561001 is a deficient number, since it is larger than the sum of its proper divisors (7110562838359).

21330224561001 is a wasteful number, since it uses less digits than its factorization.

21330224561001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121996175.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 21330224561001 its reverse (10016542203312), we get a palindrome (31346766764313).

The spelling of 21330224561001 in words is "twenty-one trillion, three hundred thirty billion, two hundred twenty-four million, five hundred sixty-one thousand, one".