11320232021 has 4 divisors (see below), whose sum is σ = 12937408032. Its totient is φ = 9703056012.

The previous prime is 11320232003. The next prime is 11320232039. The reversal of 11320232021 is 12023202311.

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: 12023202311 = 317 ⋅37928083.

It is an interprime number because it is at equal distance from previous prime (11320232003) and next prime (11320232039).

It is a cyclic number.

It is not a de Polignac number, because 11320232021 - 2⁶ = 11320231957 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 (11320232921) 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, 808587995 + ... + 808588008.

It is an arithmetic number, because the mean of its divisors is an integer number (3234352008).

Almost surely, 2^11320232021 is an apocalyptic number.

It is an amenable number.

11320232021 is a deficient number, since it is larger than the sum of its proper divisors (1617176011).

11320232021 is an equidigital number, since it uses as much as digits as its factorization.

11320232021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617176010.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 11320232021 its reverse (12023202311), we get a palindrome (23343434332).

The spelling of 11320232021 in words is "eleven billion, three hundred twenty million, two hundred thirty-two thousand, twenty-one".