11179607021 has 4 divisors (see below), whose sum is σ = 12195934944. Its totient is φ = 10163279100.

The previous prime is 11179607009. The next prime is 11179607093. The reversal of 11179607021 is 12070697111.

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.

It is a cyclic number.

It is not a de Polignac number, because 11179607021 - 2⁶ = 11179606957 is a prime.

It is a super-2 number, since 2×11179607021² (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 (11179607521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508163945 + ... + 508163966.

It is an arithmetic number, because the mean of its divisors is an integer number (3048983736).

Almost surely, 2^11179607021 is an apocalyptic number.

11179607021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11179607021 is a deficient number, since it is larger than the sum of its proper divisors (1016327923).

11179607021 is a wasteful number, since it uses less digits than its factorization.

11179607021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016327922.

The product of its (nonzero) digits is 5292, while the sum is 35.

The spelling of 11179607021 in words is "eleven billion, one hundred seventy-nine million, six hundred seven thousand, twenty-one".