1123323212020 has 12 divisors (see below), whose sum is σ = 2358978745284. Its totient is φ = 449329284800.

The previous prime is 1123323211993. The next prime is 1123323212021. The reversal of 1123323212020 is 202123233211.

It can be written as a sum of positive squares in 2 ways, for example, as 157356609124 + 965966602896 = 396682^2 + 982836^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1123323211982 and 1123323212000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123323212021) 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, 28083080281 + ... + 28083080320.

It is an arithmetic number, because the mean of its divisors is an integer number (196581562107).

Almost surely, 2^{1123323212020} is an apocalyptic number.

1123323212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123323212020 is an abundant number, since it is smaller than the sum of its proper divisors (1235655533264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123323212020 is a wasteful number, since it uses less digits than its factorization.

1123323212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56166160610 (or 56166160608 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1123323212020 its reverse (202123233211), we get a palindrome (1325446445231).

The spelling of 1123323212020 in words is "one trillion, one hundred twenty-three billion, three hundred twenty-three million, two hundred twelve thousand, twenty".