13211002022221 has 16 divisors (see below), whose sum is σ = 14179059901440. Its totient is φ = 12264468053760.

The previous prime is 13211002022219. The next prime is 13211002022249. The reversal of 13211002022221 is 12222020011231.

It is not a de Polignac number, because 13211002022221 - 2¹ = 13211002022219 is a prime.

It is a super-2 number, since 2×13211002022221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13211002022261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3446101 + ... + 6188506.

It is an arithmetic number, because the mean of its divisors is an integer number (886191243840).

Almost surely, 2^{13211002022221} is an apocalyptic number.

It is an amenable number.

13211002022221 is a deficient number, since it is larger than the sum of its proper divisors (968057879219).

13211002022221 is a wasteful number, since it uses less digits than its factorization.

13211002022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9635724.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 13211002022221 its reverse (12222020011231), we get a palindrome (25433022033452).

The spelling of 13211002022221 in words is "thirteen trillion, two hundred eleven billion, two million, twenty-two thousand, two hundred twenty-one".