220221110211100 has 144 divisors (see below), whose sum is σ = 493525635150240. Its totient is φ = 85242544128000.

The previous prime is 220221110211061. The next prime is 220221110211101. The reversal of 220221110211100 is 1112011122022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220221110211101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8602038300 + ... + 8602063900.

It is an arithmetic number, because the mean of its divisors is an integer number (3427261355210).

Almost surely, 2^{220221110211100} is an apocalyptic number.

220221110211100 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 220221110211100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246762817575120).

220221110211100 is an abundant number, since it is smaller than the sum of its proper divisors (273304524939140).

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

220221110211100 is a wasteful number, since it uses less digits than its factorization.

220221110211100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44120 (or 44113 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 220221110211100 its reverse (1112011122022), we get a palindrome (221333121333122).

The spelling of 220221110211100 in words is "two hundred twenty trillion, two hundred twenty-one billion, one hundred ten million, two hundred eleven thousand, one hundred".