221301201 has 32 divisors (see below), whose sum is σ = 330264576. Its totient is φ = 130680000.

The previous prime is 221301191. The next prime is 221301203. The reversal of 221301201 is 102103122.

It is not a de Polignac number, because 221301201 - 2⁶ = 221301137 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221301203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 222816 + ... + 223806.

It is an arithmetic number, because the mean of its divisors is an integer number (10320768).

Almost surely, 2^221301201 is an apocalyptic number.

It is an amenable number.

221301201 is a deficient number, since it is larger than the sum of its proper divisors (108963375).

221301201 is a wasteful number, since it uses less digits than its factorization.

221301201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 221301201 is about 14876.1957838689. The cubic root of 221301201 is about 604.8689022230.

Adding to 221301201 its reverse (102103122), we get a palindrome (323404323).

The spelling of 221301201 in words is "two hundred twenty-one million, three hundred one thousand, two hundred one".