1123230030021 has 64 divisors (see below), whose sum is σ = 1846716364800. Its totient is φ = 668980166400.

The previous prime is 1123230030011. The next prime is 1123230030047. The reversal of 1123230030021 is 1200300323211.

1123230030021 is a `hidden beast` number, since 1 + 12 + 32 + 300 + 300 + 21 = 666.

It is not a de Polignac number, because 1123230030021 - 2⁷ = 1123230029893 is a prime.

It is a super-2 number, since 2×1123230030021² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1123230029976 and 1123230030003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123230030011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 61514125 + ... + 61532381.

It is an arithmetic number, because the mean of its divisors is an integer number (28854943200).

Almost surely, 2^{1123230030021} is an apocalyptic number.

1123230030021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1123230030021 is a deficient number, since it is larger than the sum of its proper divisors (723486334779).

1123230030021 is a wasteful number, since it uses less digits than its factorization.

1123230030021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21847 (or 21841 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1123230030021 its reverse (1200300323211), we get a palindrome (2323530353232).

The spelling of 1123230030021 in words is "one trillion, one hundred twenty-three billion, two hundred thirty million, thirty thousand, twenty-one".