13220111020 has 12 divisors (see below), whose sum is σ = 27762233184. Its totient is φ = 5288044400.

The previous prime is 13220111017. The next prime is 13220111027. The reversal of 13220111020 is 2011102231.

It is a super-2 number, since 2×13220111020² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13220111027) 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 3 ways as a sum of consecutive naturals, for example, 330502756 + ... + 330502795.

It is an arithmetic number, because the mean of its divisors is an integer number (2313519432).

Almost surely, 2^13220111020 is an apocalyptic number.

13220111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13220111020 is an abundant number, since it is smaller than the sum of its proper divisors (14542122164).

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

13220111020 is a wasteful number, since it uses less digits than its factorization.

13220111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661005560 (or 661005558 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 13220111020 its reverse (2011102231), we get a palindrome (15231213251).

The spelling of 13220111020 in words is "thirteen billion, two hundred twenty million, one hundred eleven thousand, twenty".