13224111021 has 24 divisors (see below), whose sum is σ = 20913263904. Its totient is φ = 7985662560.

The previous prime is 13224110993. The next prime is 13224111071. The reversal of 13224111021 is 12011142231.

It is not a de Polignac number, because 13224111021 - 2⁹ = 13224110509 is a prime.

It is a super-2 number, since 2×13224111021² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13224110985 and 13224111003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13224111071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 213691 + ... + 268536.

It is an arithmetic number, because the mean of its divisors is an integer number (871385996).

Almost surely, 2^13224111021 is an apocalyptic number.

13224111021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13224111021 is a deficient number, since it is larger than the sum of its proper divisors (7689152883).

13224111021 is a wasteful number, since it uses less digits than its factorization.

13224111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482521 (or 482518 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 13224111021 its reverse (12011142231), we get a palindrome (25235253252).

The spelling of 13224111021 in words is "thirteen billion, two hundred twenty-four million, one hundred eleven thousand, twenty-one".