13111322020 has 24 divisors (see below), whose sum is σ = 28982923200. Its totient is φ = 4968500832.

The previous prime is 13111321967. The next prime is 13111322027. The reversal of 13111322020 is 2022311131.

It is a super-2 number, since 2×13111322020² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13111321985 and 13111322003.

It is not an unprimeable number, because it can be changed into a prime (13111322027) 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 7 ways as a sum of consecutive naturals, for example, 17251360 + ... + 17252119.

It is an arithmetic number, because the mean of its divisors is an integer number (1207621800).

Almost surely, 2^13111322020 is an apocalyptic number.

13111322020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13111322020 is an abundant number, since it is smaller than the sum of its proper divisors (15871601180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13111322020 is a wasteful number, since it uses less digits than its factorization.

13111322020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34503507 (or 34503505 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 13111322020 its reverse (2022311131), we get a palindrome (15133633151).

The spelling of 13111322020 in words is "thirteen billion, one hundred eleven million, three hundred twenty-two thousand, twenty".