13311021121 has 16 divisors (see below), whose sum is σ = 14287478400. Its totient is φ = 12363494400.

The previous prime is 13311021103. The next prime is 13311021161. The reversal of 13311021121 is 12112011331.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13311021121 - 2¹³ = 13311012929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13311021095 and 13311021104.

It is not an unprimeable number, because it can be changed into a prime (13311021161) 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, 341985 + ... + 378913.

It is an arithmetic number, because the mean of its divisors is an integer number (892967400).

Almost surely, 2^13311021121 is an apocalyptic number.

It is an amenable number.

13311021121 is a deficient number, since it is larger than the sum of its proper divisors (976457279).

13311021121 is a wasteful number, since it uses less digits than its factorization.

13311021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37320.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 13311021121 its reverse (12112011331), we get a palindrome (25423032452).

The spelling of 13311021121 in words is "thirteen billion, three hundred eleven million, twenty-one thousand, one hundred twenty-one".