201021339 has 4 divisors (see below), whose sum is σ = 268028456. Its totient is φ = 134014224.

The previous prime is 201021323. The next prime is 201021367. The reversal of 201021339 is 933120102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 201021339 - 2⁴ = 201021323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201021839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33503554 + ... + 33503559.

It is an arithmetic number, because the mean of its divisors is an integer number (67007114).

Almost surely, 2^201021339 is an apocalyptic number.

201021339 is a deficient number, since it is larger than the sum of its proper divisors (67007117).

201021339 is an equidigital number, since it uses as much as digits as its factorization.

201021339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67007116.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 201021339 is about 14178.1994272898. The cubic root of 201021339 is about 585.7973290288.

The spelling of 201021339 in words is "two hundred one million, twenty-one thousand, three hundred thirty-nine".