1011201239 has 2 divisors, whose sum is σ = 1011201240. Its totient is φ = 1011201238.

The previous prime is 1011201229. The next prime is 1011201263. The reversal of 1011201239 is 9321021101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1011201239 - 2²⁴ = 994424023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011201239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011201229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505600619 + 505600620.

It is an arithmetic number, because the mean of its divisors is an integer number (505600620).

Almost surely, 2^1011201239 is an apocalyptic number.

1011201239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011201239 is an equidigital number, since it uses as much as digits as its factorization.

1011201239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 1011201239 is about 31799.3905444743. The cubic root of 1011201239 is about 1003.7198915818.

The spelling of 1011201239 in words is "one billion, eleven million, two hundred one thousand, two hundred thirty-nine".