221220120120200 has 48 divisors (see below), whose sum is σ = 514866477753360. Its totient is φ = 88396917128000.

The previous prime is 221220120120187. The next prime is 221220120120217. The reversal of 221220120120200 is 2021021022122.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 569373566 + ... + 569761965.

It is an arithmetic number, because the mean of its divisors is an integer number (10726384953195).

Almost surely, 2^{221220120120200} is an apocalyptic number.

221220120120200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221220120120200 is an abundant number, since it is smaller than the sum of its proper divisors (293646357633160).

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

221220120120200 is a wasteful number, since it uses less digits than its factorization.

221220120120200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139136518 (or 1139136509 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221220120120200 its reverse (2021021022122), we get a palindrome (223241141142322).

The spelling of 221220120120200 in words is "two hundred twenty-one trillion, two hundred twenty billion, one hundred twenty million, one hundred twenty thousand, two hundred".