11232010021 has 4 divisors (see below), whose sum is σ = 11239871500. Its totient is φ = 11224148544.

The previous prime is 11232010019. The next prime is 11232010057. The reversal of 11232010021 is 12001023211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12001023211 = 31 ⋅387129781.

It can be written as a sum of positive squares in 2 ways, for example, as 2551361121 + 8680648900 = 50511^2 + 93170^2 .

It is a cyclic number.

It is not a de Polignac number, because 11232010021 - 2¹ = 11232010019 is a prime.

It is a super-2 number, since 2×11232010021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11232009983 and 11232010010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11232010061) 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, 3928596 + ... + 3931453.

It is an arithmetic number, because the mean of its divisors is an integer number (2809967875).

Almost surely, 2^11232010021 is an apocalyptic number.

It is an amenable number.

11232010021 is a deficient number, since it is larger than the sum of its proper divisors (7861479).

11232010021 is an equidigital number, since it uses as much as digits as its factorization.

11232010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7861478.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 11232010021 its reverse (12001023211), we get a palindrome (23233033232).

The spelling of 11232010021 in words is "eleven billion, two hundred thirty-two million, ten thousand, twenty-one".