21201303222001 has 8 divisors (see below), whose sum is σ = 24234898170240. Its totient is φ = 18168917610048.

The previous prime is 21201303221971. The next prime is 21201303222017. The reversal of 21201303222001 is 10022230310212.

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 21201303222001 - 2¹⁹ = 21201302697713 is a prime.

It is a super-2 number, since 2×21201303222001² (a number of 27 digits) contains 22 as substring.

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 21201303222001.

It is not an unprimeable number, because it can be changed into a prime (21201303222091) 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, 302296501 + ... + 302366626.

It is an arithmetic number, because the mean of its divisors is an integer number (3029362271280).

Almost surely, 2^{21201303222001} is an apocalyptic number.

It is an amenable number.

21201303222001 is a deficient number, since it is larger than the sum of its proper divisors (3033594948239).

21201303222001 is an equidigital number, since it uses as much as digits as its factorization.

21201303222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604668143.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21201303222001 its reverse (10022230310212), we get a palindrome (31223533532213).

The spelling of 21201303222001 in words is "twenty-one trillion, two hundred one billion, three hundred three million, two hundred twenty-two thousand, one".