221200012201100 has 36 divisors (see below), whose sum is σ = 480006648639504. Its totient is φ = 88479521532480.

The previous prime is 221200012201097. The next prime is 221200012201121. The reversal of 221200012201100 is 1102210002122.

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, 12642809 + ... + 24540591.

It is an arithmetic number, because the mean of its divisors is an integer number (13333518017764).

Almost surely, 2^{221200012201100} is an apocalyptic number.

221200012201100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221200012201100 is an abundant number, since it is smaller than the sum of its proper divisors (258806636438404).

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

221200012201100 is a wasteful number, since it uses less digits than its factorization.

221200012201100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12083714 (or 12083707 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221200012201100 its reverse (1102210002122), we get a palindrome (222302222203222).

The spelling of 221200012201100 in words is "two hundred twenty-one trillion, two hundred billion, twelve million, two hundred one thousand, one hundred".