201002321 has 16 divisors (see below), whose sum is σ = 220993920. Its totient is φ = 181683840.

The previous prime is 201002303. The next prime is 201002323. The reversal of 201002321 is 123200102.

It is a happy number.

It is not a de Polignac number, because 201002321 - 2²⁶ = 133893457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201002323) 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, 385541 + ... + 386061.

It is an arithmetic number, because the mean of its divisors is an integer number (13812120).

Almost surely, 2^201002321 is an apocalyptic number.

It is an amenable number.

201002321 is a deficient number, since it is larger than the sum of its proper divisors (19991599).

201002321 is a wasteful number, since it uses less digits than its factorization.

201002321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 201002321 is about 14177.5287338802. The cubic root of 201002321 is about 585.7788549620.

Adding to 201002321 its reverse (123200102), we get a palindrome (324202423).

The spelling of 201002321 in words is "two hundred one million, two thousand, three hundred twenty-one".