221401201 has 8 divisors (see below), whose sum is σ = 253357760. Its totient is φ = 189526608.

The previous prime is 221401199. The next prime is 221401261. The reversal of 221401201 is 102104122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221401201 - 2¹ = 221401199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221401261) 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, 14586 + ... + 25603.

It is an arithmetic number, because the mean of its divisors is an integer number (31669720).

Almost surely, 2^221401201 is an apocalyptic number.

It is an amenable number.

221401201 is a deficient number, since it is larger than the sum of its proper divisors (31956559).

221401201 is an equidigital number, since it uses as much as digits as its factorization.

221401201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40983.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 221401201 is about 14879.5564786051. The cubic root of 221401201 is about 604.9599964443.

Adding to 221401201 its reverse (102104122), we get a palindrome (323505323).

The spelling of 221401201 in words is "two hundred twenty-one million, four hundred one thousand, two hundred one".