11123020303021 has 4 divisors (see below), whose sum is σ = 12134203966944. Its totient is φ = 10111836639100.

The previous prime is 11123020303007. The next prime is 11123020303027. The reversal of 11123020303021 is 12030302032111.

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 11123020303021 - 2⁷ = 11123020302893 is a prime.

It is a super-2 number, since 2×11123020303021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11123020303021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123020303027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505591831945 + ... + 505591831966.

It is an arithmetic number, because the mean of its divisors is an integer number (3033550991736).

Almost surely, 2^{11123020303021} is an apocalyptic number.

11123020303021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11123020303021 is a deficient number, since it is larger than the sum of its proper divisors (1011183663923).

11123020303021 is a wasteful number, since it uses less digits than its factorization.

11123020303021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011183663922.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 11123020303021 its reverse (12030302032111), we get a palindrome (23153322335132).

The spelling of 11123020303021 in words is "eleven trillion, one hundred twenty-three billion, twenty million, three hundred three thousand, twenty-one".