221212200120200 has 48 divisors (see below), whose sum is σ = 514354041474000. Its totient is φ = 88478742208320.

The previous prime is 221212200120151. The next prime is 221212200120251. The reversal of 221212200120200 is 2021002212122.

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, 35470490 + ... + 41238089.

It is an arithmetic number, because the mean of its divisors is an integer number (10715709197375).

Almost surely, 2^{221212200120200} is an apocalyptic number.

221212200120200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221212200120200 is an abundant number, since it is smaller than the sum of its proper divisors (293141841353800).

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

221212200120200 is a wasteful number, since it uses less digits than its factorization.

221212200120200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76723014 (or 76723005 counting only the distinct ones).

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

Adding to 221212200120200 its reverse (2021002212122), we get a palindrome (223233202332322).

The spelling of 221212200120200 in words is "two hundred twenty-one trillion, two hundred twelve billion, two hundred million, one hundred twenty thousand, two hundred".