11231121679 has 4 divisors (see below), whose sum is σ = 11231461384. Its totient is φ = 11230781976.

The previous prime is 11231121631. The next prime is 11231121703. The reversal of 11231121679 is 97612113211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97612113211 = 75289 ⋅1296499.

It is a cyclic number.

It is not a de Polignac number, because 11231121679 - 2²⁹ = 10694250767 is a prime.

It is a super-2 number, since 2×11231121679² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231125679) 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, 114177 + ... + 188410.

It is an arithmetic number, because the mean of its divisors is an integer number (2807865346).

Almost surely, 2^11231121679 is an apocalyptic number.

11231121679 is a deficient number, since it is larger than the sum of its proper divisors (339705).

11231121679 is an equidigital number, since it uses as much as digits as its factorization.

11231121679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339704.

The product of its digits is 4536, while the sum is 34.

The spelling of 11231121679 in words is "eleven billion, two hundred thirty-one million, one hundred twenty-one thousand, six hundred seventy-nine".