220023121100 has 72 divisors (see below), whose sum is σ = 483104548080. Its totient is φ = 86968161280.

The previous prime is 220023121099. The next prime is 220023121139. The reversal of 220023121100 is 1121320022.

It is a happy number.

220023121100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 17019239 + ... + 17032161.

It is an arithmetic number, because the mean of its divisors is an integer number (6709785390).

Almost surely, 2^220023121100 is an apocalyptic number.

220023121100 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 220023121100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241552274040).

220023121100 is an abundant number, since it is smaller than the sum of its proper divisors (263081426980).

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

220023121100 is a wasteful number, since it uses less digits than its factorization.

220023121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14939 (or 14932 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 220023121100 its reverse (1121320022), we get a palindrome (221144441122).

The spelling of 220023121100 in words is "two hundred twenty billion, twenty-three million, one hundred twenty-one thousand, one hundred".