11236227989 has 4 divisors (see below), whose sum is σ = 12841403424. Its totient is φ = 9631052556.

The previous prime is 11236227931. The next prime is 11236228001. The reversal of 11236227989 is 98972263211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98972263211 = 173 ⋅572094007.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11236227989 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 (11236227929) 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, 802587707 + ... + 802587720.

It is an arithmetic number, because the mean of its divisors is an integer number (3210350856).

Almost surely, 2^11236227989 is an apocalyptic number.

It is an amenable number.

11236227989 is a deficient number, since it is larger than the sum of its proper divisors (1605175435).

11236227989 is an equidigital number, since it uses as much as digits as its factorization.

11236227989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605175434.

The product of its digits is 653184, while the sum is 50.

The spelling of 11236227989 in words is "eleven billion, two hundred thirty-six million, two hundred twenty-seven thousand, nine hundred eighty-nine".