1123211130021 has 8 divisors (see below), whose sum is σ = 1664016488960. Its totient is φ = 748807419996.

The previous prime is 1123211129987. The next prime is 1123211130047. The reversal of 1123211130021 is 1200311123211.

1123211130021 is a `hidden beast` number, since 1 + 1 + 232 + 111 + 300 + 21 = 666.

It is not a de Polignac number, because 1123211130021 - 2¹⁴ = 1123211113637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1123211129976 and 1123211130003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123211130061) 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 7 ways as a sum of consecutive naturals, for example, 20800206085 + ... + 20800206138.

It is an arithmetic number, because the mean of its divisors is an integer number (208002061120).

Almost surely, 2^{1123211130021} is an apocalyptic number.

It is an amenable number.

1123211130021 is a deficient number, since it is larger than the sum of its proper divisors (540805358939).

1123211130021 is an equidigital number, since it uses as much as digits as its factorization.

1123211130021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41600412232 (or 41600412226 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1123211130021 its reverse (1200311123211), we get a palindrome (2323522253232).

The spelling of 1123211130021 in words is "one trillion, one hundred twenty-three billion, two hundred eleven million, one hundred thirty thousand, twenty-one".