221202201 has 16 divisors (see below), whose sum is σ = 335738880. Its totient is φ = 128232720.

The previous prime is 221202187. The next prime is 221202203. The reversal of 221202201 is 102202122.

It is not a de Polignac number, because 221202201 - 2⁷ = 221202073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221202203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144961 + ... + 146478.

It is an arithmetic number, because the mean of its divisors is an integer number (20983680).

Almost surely, 2^221202201 is an apocalyptic number.

It is an amenable number.

221202201 is a deficient number, since it is larger than the sum of its proper divisors (114536679).

221202201 is a wasteful number, since it uses less digits than its factorization.

221202201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291476.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 221202201 is about 14872.8679480455. The cubic root of 221202201 is about 604.7786919082.

Adding to 221202201 its reverse (102202122), we get a palindrome (323404323).

The spelling of 221202201 in words is "two hundred twenty-one million, two hundred two thousand, two hundred one".