201002221 has 32 divisors (see below), whose sum is σ = 248168448. Its totient is φ = 159086400.

The previous prime is 201002189. The next prime is 201002227. The reversal of 201002221 is 122200102.

It is not a de Polignac number, because 201002221 - 2⁵ = 201002189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201002198 and 201002207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201002227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 764136 + ... + 764398.

It is an arithmetic number, because the mean of its divisors is an integer number (7755264).

Almost surely, 2^201002221 is an apocalyptic number.

It is an amenable number.

201002221 is a deficient number, since it is larger than the sum of its proper divisors (47166227).

201002221 is a wasteful number, since it uses less digits than its factorization.

201002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 201002221 is about 14177.5252071721. The cubic root of 201002221 is about 585.7787578190.

Adding to 201002221 its reverse (122200102), we get a palindrome (323202323).

The spelling of 201002221 in words is "two hundred one million, two thousand, two hundred twenty-one".