21303213220201 has 16 divisors (see below), whose sum is σ = 23296192194240. Its totient is φ = 19319624864320.

The previous prime is 21303213220199. The next prime is 21303213220207. The reversal of 21303213220201 is 10202231230312.

It is not a de Polignac number, because 21303213220201 - 2¹ = 21303213220199 is a prime.

It is a super-2 number, since 2×21303213220201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21303213220207) 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 15 ways as a sum of consecutive naturals, for example, 156144651 + ... + 156281023.

It is an arithmetic number, because the mean of its divisors is an integer number (1456012012140).

Almost surely, 2^{21303213220201} is an apocalyptic number.

It is an amenable number.

21303213220201 is a deficient number, since it is larger than the sum of its proper divisors (1992978974039).

21303213220201 is a wasteful number, since it uses less digits than its factorization.

21303213220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170696.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21303213220201 its reverse (10202231230312), we get a palindrome (31505444450513).

The spelling of 21303213220201 in words is "twenty-one trillion, three hundred three billion, two hundred thirteen million, two hundred twenty thousand, two hundred one".