220121213200 has 120 divisors (see below), whose sum is σ = 610039294272. Its totient is φ = 74764700160.

The previous prime is 220121213189. The next prime is 220121213293. The reversal of 220121213200 is 2312121022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67759 + ... + 666958.

Almost surely, 2^220121213200 is an apocalyptic number.

220121213200 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 220121213200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305019647136).

220121213200 is an abundant number, since it is smaller than the sum of its proper divisors (389918081072).

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

220121213200 is a wasteful number, since it uses less digits than its factorization.

220121213200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734849 (or 734838 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 220121213200 its reverse (2312121022), we get a palindrome (222433334222).

The spelling of 220121213200 in words is "two hundred twenty billion, one hundred twenty-one million, two hundred thirteen thousand, two hundred".