220121112220200 has 144 divisors (see below), whose sum is σ = 778147440688800. Its totient is φ = 55609544131200.

The previous prime is 220121112220187. The next prime is 220121112220201. The reversal of 220121112220200 is 2022211121022.

It is a happy number.

220121112220200 is a `hidden beast` number, since 2 + 20 + 1 + 211 + 12 + 220 + 200 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (220121112220201) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3218110716 + ... + 3218179115.

It is an arithmetic number, because the mean of its divisors is an integer number (5403801671450).

Almost surely, 2^{220121112220200} is an apocalyptic number.

220121112220200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220121112220200 is an abundant number, since it is smaller than the sum of its proper divisors (558026328468600).

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

220121112220200 is a wasteful number, since it uses less digits than its factorization.

220121112220200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6436289872 (or 6436289860 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 220121112220200 its reverse (2022211121022), we get a palindrome (222143323341222).

The spelling of 220121112220200 in words is "two hundred twenty trillion, one hundred twenty-one billion, one hundred twelve million, two hundred twenty thousand, two hundred".