11273021239 has 4 divisors (see below), whose sum is σ = 11408840856. Its totient is φ = 11137201624.

The previous prime is 11273021183. The next prime is 11273021261. The reversal of 11273021239 is 93212037211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93212037211 = 181 ⋅514983631.

It is a cyclic number.

It is not a de Polignac number, because 11273021239 - 2²¹ = 11270924087 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11273021239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11273051239) 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, 67909684 + ... + 67909849.

It is an arithmetic number, because the mean of its divisors is an integer number (2852210214).

Almost surely, 2^11273021239 is an apocalyptic number.

11273021239 is a deficient number, since it is larger than the sum of its proper divisors (135819617).

11273021239 is an equidigital number, since it uses as much as digits as its factorization.

11273021239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135819616.

The product of its (nonzero) digits is 4536, while the sum is 31.

The spelling of 11273021239 in words is "eleven billion, two hundred seventy-three million, twenty-one thousand, two hundred thirty-nine".