220421201 has 32 divisors (see below), whose sum is σ = 313383168. Its totient is φ = 149207040.

The previous prime is 220421197. The next prime is 220421281. The reversal of 220421201 is 102124022.

It is a cyclic number.

It is not a de Polignac number, because 220421201 - 2² = 220421197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220421281) 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, 10541 + ... + 23493.

It is an arithmetic number, because the mean of its divisors is an integer number (9793224).

Almost surely, 2^220421201 is an apocalyptic number.

It is an amenable number.

220421201 is a deficient number, since it is larger than the sum of its proper divisors (92961967).

220421201 is a wasteful number, since it uses less digits than its factorization.

220421201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13001.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 220421201 is about 14846.5888674806. The cubic root of 220421201 is about 604.0660872748.

Adding to 220421201 its reverse (102124022), we get a palindrome (322545223).

The spelling of 220421201 in words is "two hundred twenty million, four hundred twenty-one thousand, two hundred one".