220220212121200 has 120 divisors (see below), whose sum is σ = 530001428206320. Its totient is φ = 87934567219200.

The previous prime is 220220212121149. The next prime is 220220212121207. The reversal of 220220212121200 is 2121212022022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220220212121207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1453455847 + ... + 1453607353.

It is an arithmetic number, because the mean of its divisors is an integer number (4416678568386).

Almost surely, 2^{220220212121200} is an apocalyptic number.

220220212121200 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 220220212121200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265000714103160).

220220212121200 is an abundant number, since it is smaller than the sum of its proper divisors (309781216085120).

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

220220212121200 is a wasteful number, since it uses less digits than its factorization.

220220212121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157835 (or 157824 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 220220212121200 its reverse (2121212022022), we get a palindrome (222341424143222).

The spelling of 220220212121200 in words is "two hundred twenty trillion, two hundred twenty billion, two hundred twelve million, one hundred twenty-one thousand, two hundred".