221201102200 has 48 divisors (see below), whose sum is σ = 553853535480. Its totient is φ = 81674252160.

The previous prime is 221201102189. The next prime is 221201102207. The reversal of 221201102200 is 2201102122.

It is a happy number.

221201102200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221201102200² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221201102207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42536074 + ... + 42541273.

Almost surely, 2^221201102200 is an apocalyptic number.

221201102200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221201102200 is an abundant number, since it is smaller than the sum of its proper divisors (332652433280).

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

221201102200 is a wasteful number, since it uses less digits than its factorization.

221201102200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85077376 (or 85077367 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221201102200 its reverse (2201102122), we get a palindrome (223402204322).

The spelling of 221201102200 in words is "two hundred twenty-one billion, two hundred one million, one hundred two thousand, two hundred".