220120121020100 has 72 divisors (see below), whose sum is σ = 554847046141248. Its totient is φ = 74232546652800.

The previous prime is 220120121020081. The next prime is 220120121020123. The reversal of 220120121020100 is 1020121021022.

It is a Harshad number since it is a multiple of its sum of digits (14).

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 23 ways as a sum of consecutive naturals, for example, 2577476282 + ... + 2577561681.

It is an arithmetic number, because the mean of its divisors is an integer number (7706208974184).

Almost surely, 2^{220120121020100} is an apocalyptic number.

220120121020100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220120121020100 is an abundant number, since it is smaller than the sum of its proper divisors (334726925121148).

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

220120121020100 is a wasteful number, since it uses less digits than its factorization.

220120121020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5155038045 (or 5155038038 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 220120121020100 its reverse (1020121021022), we get a palindrome (221140242041122).

The spelling of 220120121020100 in words is "two hundred twenty trillion, one hundred twenty billion, one hundred twenty-one million, twenty thousand, one hundred".