221201021200200 has 48 divisors (see below), whose sum is σ = 685723165722480. Its totient is φ = 58986938986560.

The previous prime is 221201021200199. The next prime is 221201021200267. The reversal of 221201021200200 is 2002120102122.

It is a super-3 number, since 3×221201021200200³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 221201021200200.

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, 184334183734 + ... + 184334184933.

It is an arithmetic number, because the mean of its divisors is an integer number (14285899285885).

Almost surely, 2^{221201021200200} is an apocalyptic number.

221201021200200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221201021200200 is an abundant number, since it is smaller than the sum of its proper divisors (464522144522280).

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

221201021200200 is a wasteful number, since it uses less digits than its factorization.

221201021200200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368668368686 (or 368668368677 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221201021200200 its reverse (2002120102122), we get a palindrome (223203141302322).

The spelling of 221201021200200 in words is "two hundred twenty-one trillion, two hundred one billion, twenty-one million, two hundred thousand, two hundred".