221110121220200 has 24 divisors (see below), whose sum is σ = 514081031837430. Its totient is φ = 88444048488000.

The previous prime is 221110121220167. The next prime is 221110121220227. The reversal of 221110121220200 is 2022121011122.

It can be written as a sum of positive squares in 3 ways, for example, as 150753556774276 + 70356564445924 = 12278174^2 + 8387882^2 .

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, 552775302851 + ... + 552775303250.

Almost surely, 2^{221110121220200} is an apocalyptic number.

221110121220200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221110121220200 is an abundant number, since it is smaller than the sum of its proper divisors (292970910617230).

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

221110121220200 is a wasteful number, since it uses less digits than its factorization.

221110121220200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105550606117 (or 1105550606108 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221110121220200 its reverse (2022121011122), we get a palindrome (223132242231322).

The spelling of 221110121220200 in words is "two hundred twenty-one trillion, one hundred ten billion, one hundred twenty-one million, two hundred twenty thousand, two hundred".