221201222102200 has 192 divisors, whose sum is σ = 522252471202560. Its totient is φ = 87124431237120.

The previous prime is 221201222102197. The next prime is 221201222102209. The reversal of 221201222102200 is 2201222102122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221201222102209) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1692460054 + ... + 1692590746.

It is an arithmetic number, because the mean of its divisors is an integer number (2720064954180).

Almost surely, 2^{221201222102200} is an apocalyptic number.

221201222102200 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 221201222102200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261126235601280).

221201222102200 is an abundant number, since it is smaller than the sum of its proper divisors (301051249100360).

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

221201222102200 is a wasteful number, since it uses less digits than its factorization.

221201222102200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131346 (or 131337 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221201222102200 its reverse (2201222102122), we get a palindrome (223402444204322).

The spelling of 221201222102200 in words is "two hundred twenty-one trillion, two hundred one billion, two hundred twenty-two million, one hundred two thousand, two hundred".