220120101200 has 30 divisors (see below), whose sum is σ = 528838544094. Its totient is φ = 88048040320.

The previous prime is 220120101169. The next prime is 220120101211. The reversal of 220120101200 is 2101021022.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 4144269376 + 215975831824 = 64376^2 + 464732^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 275149727 + ... + 275150526.

Almost surely, 2^220120101200 is an apocalyptic number.

220120101200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220120101200 is an abundant number, since it is smaller than the sum of its proper divisors (308718442894).

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

220120101200 is a wasteful number, since it uses less digits than its factorization.

220120101200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550300271 (or 550300260 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 220120101200 its reverse (2101021022), we get a palindrome (222221122222).

The spelling of 220120101200 in words is "two hundred twenty billion, one hundred twenty million, one hundred one thousand, two hundred".