20113111333320 has 128 divisors (see below), whose sum is σ = 60538766428800. Its totient is φ = 5345772816384.

The previous prime is 20113111333313. The next prime is 20113111333331. The reversal of 20113111333320 is 2333311131102.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 422263266 + ... + 422310894.

It is an arithmetic number, because the mean of its divisors is an integer number (472959112725).

Almost surely, 2^{20113111333320} is an apocalyptic number.

20113111333320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20113111333320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30269383214400).

20113111333320 is an abundant number, since it is smaller than the sum of its proper divisors (40425655095480).

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

20113111333320 is a wasteful number, since it uses less digits than its factorization.

20113111333320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59199 (or 59195 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 20113111333320 its reverse (2333311131102), we get a palindrome (22446422464422).

The spelling of 20113111333320 in words is "twenty trillion, one hundred thirteen billion, one hundred eleven million, three hundred thirty-three thousand, three hundred twenty".