11133100021 has 4 divisors (see below), whose sum is σ = 11617147872. Its totient is φ = 10649052172.

The previous prime is 11133100009. The next prime is 11133100037. The reversal of 11133100021 is 12000133111.

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 11133100021 - 2¹³ = 11133091829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11133099974 and 11133100010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11133100061) 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, 242023891 + ... + 242023936.

It is an arithmetic number, because the mean of its divisors is an integer number (2904286968).

Almost surely, 2^11133100021 is an apocalyptic number.

It is an amenable number.

11133100021 is a deficient number, since it is larger than the sum of its proper divisors (484047851).

11133100021 is an equidigital number, since it uses as much as digits as its factorization.

11133100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484047850.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 11133100021 its reverse (12000133111), we get a palindrome (23133233132).

The spelling of 11133100021 in words is "eleven billion, one hundred thirty-three million, one hundred thousand, twenty-one".