201001001239 has 4 divisors (see below), whose sum is σ = 201090616056. Its totient is φ = 200911386424.

The previous prime is 201001001237. The next prime is 201001001269. The reversal of 201001001239 is 932100100102.

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

It is a cyclic number.

It is not a de Polignac number, because 201001001239 - 2¹ = 201001001237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201001001237) 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, 44804044 + ... + 44808529.

It is an arithmetic number, because the mean of its divisors is an integer number (50272654014).

Almost surely, 2^201001001239 is an apocalyptic number.

201001001239 is a deficient number, since it is larger than the sum of its proper divisors (89614817).

201001001239 is an equidigital number, since it uses as much as digits as its factorization.

201001001239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89614816.

The product of its (nonzero) digits is 108, while the sum is 19.

The spelling of 201001001239 in words is "two hundred one billion, one million, one thousand, two hundred thirty-nine".