221167201 has 16 divisors (see below), whose sum is σ = 239708160. Its totient is φ = 203409360.

The previous prime is 221167187. The next prime is 221167217. The reversal of 221167201 is 102761122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 221167201 - 2¹³ = 221159009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221167291) 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, 89160 + ... + 91606.

It is an arithmetic number, because the mean of its divisors is an integer number (14981760).

Almost surely, 2^221167201 is an apocalyptic number.

It is an amenable number.

221167201 is a deficient number, since it is larger than the sum of its proper divisors (18540959).

221167201 is a wasteful number, since it uses less digits than its factorization.

221167201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2604.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 221167201 is about 14871.6912622607. The cubic root of 221167201 is about 604.7467929328.

The spelling of 221167201 in words is "two hundred twenty-one million, one hundred sixty-seven thousand, two hundred one".