16111332220 has 24 divisors (see below), whose sum is σ = 35000481600. Its totient is φ = 6222307392.

The previous prime is 16111332197. The next prime is 16111332221. The reversal of 16111332220 is 2223311161.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 16111332191 and 16111332200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16111332221) 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, 13888500 + ... + 13889659.

It is an arithmetic number, because the mean of its divisors is an integer number (1458353400).

Almost surely, 2^16111332220 is an apocalyptic number.

16111332220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16111332220 is an abundant number, since it is smaller than the sum of its proper divisors (18889149380).

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

16111332220 is a wasteful number, since it uses less digits than its factorization.

16111332220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27778197 (or 27778195 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 16111332220 its reverse (2223311161), we get a palindrome (18334643381).

The spelling of 16111332220 in words is "sixteen billion, one hundred eleven million, three hundred thirty-two thousand, two hundred twenty".