220121121200 has 30 divisors (see below), whose sum is σ = 528840994644. Its totient is φ = 88048448320.

The previous prime is 220121121191. The next prime is 220121121203. The reversal of 220121121200 is 2121121022.

It is a super-3 number, since 3×220121121200³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (220121121203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 275151002 + ... + 275151801.

Almost surely, 2^220121121200 is an apocalyptic number.

220121121200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220121121200 is an abundant number, since it is smaller than the sum of its proper divisors (308719873444).

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

220121121200 is a wasteful number, since it uses less digits than its factorization.

220121121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550302821 (or 550302810 counting only the distinct ones).

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

Adding to 220121121200 its reverse (2121121022), we get a palindrome (222242242222).

The spelling of 220121121200 in words is "two hundred twenty billion, one hundred twenty-one million, one hundred twenty-one thousand, two hundred".