221201102208 has 64 divisors (see below), whose sum is σ = 595003046400. Its totient is φ = 72800352768.

The previous prime is 221201102207. The next prime is 221201102279. The reversal of 221201102208 is 802201102122.

It is a tau number, because it is divible by the number of its divisors (64).

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3615516 + ... + 3676187.

It is an arithmetic number, because the mean of its divisors is an integer number (9296922600).

Almost surely, 2^221201102208 is an apocalyptic number.

It is an amenable number.

221201102208 is an abundant number, since it is smaller than the sum of its proper divisors (373801944192).

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

221201102208 is an equidigital number, since it uses as much as digits as its factorization.

221201102208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7291799 (or 7291787 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The spelling of 221201102208 in words is "two hundred twenty-one billion, two hundred one million, one hundred two thousand, two hundred eight".