1123113331021 has 16 divisors (see below), whose sum is σ = 1264880203776. Its totient is φ = 987964830000.

The previous prime is 1123113331019. The next prime is 1123113331027. The reversal of 1123113331021 is 1201333113211.

It is a cyclic number.

It is not a de Polignac number, because 1123113331021 - 2¹ = 1123113331019 is a prime.

It is a super-2 number, since 2×1123113331021² (a number of 25 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 = 1123113330983 and 1123113331001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123113331027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2918886 + ... + 3281176.

It is an arithmetic number, because the mean of its divisors is an integer number (79055012736).

Almost surely, 2^{1123113331021} is an apocalyptic number.

1123113331021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1123113331021 is a deficient number, since it is larger than the sum of its proper divisors (141766872755).

1123113331021 is a wasteful number, since it uses less digits than its factorization.

1123113331021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371424.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1123113331021 its reverse (1201333113211), we get a palindrome (2324446444232).

The spelling of 1123113331021 in words is "one trillion, one hundred twenty-three billion, one hundred thirteen million, three hundred thirty-one thousand, twenty-one".