21220201313 has 8 divisors (see below), whose sum is σ = 21946784256. Its totient is φ = 20496247200.

The previous prime is 21220201253. The next prime is 21220201351. The reversal of 21220201313 is 31310202212.

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 21220201313 - 2¹⁰ = 21220200289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21220201291 and 21220201300.

It is not an unprimeable number, because it can be changed into a prime (21220201393) 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, 640781 + ... + 673082.

It is an arithmetic number, because the mean of its divisors is an integer number (2743348032).

Almost surely, 2^21220201313 is an apocalyptic number.

It is an amenable number.

21220201313 is a deficient number, since it is larger than the sum of its proper divisors (726582943).

21220201313 is a wasteful number, since it uses less digits than its factorization.

21220201313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314415.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21220201313 its reverse (31310202212), we get a palindrome (52530403525).

The spelling of 21220201313 in words is "twenty-one billion, two hundred twenty million, two hundred one thousand, three hundred thirteen".