1123313112020 has 48 divisors (see below), whose sum is σ = 2573638800768. Its totient is φ = 408440895360.

The previous prime is 1123313112017. The next prime is 1123313112067. The reversal of 1123313112020 is 202113133211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1123313111983 and 1123313112001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2295314 + ... + 2741366.

It is an arithmetic number, because the mean of its divisors is an integer number (53617475016).

Almost surely, 2^{1123313112020} is an apocalyptic number.

1123313112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123313112020 is an abundant number, since it is smaller than the sum of its proper divisors (1450325688748).

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

1123313112020 is a wasteful number, since it uses less digits than its factorization.

1123313112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457520 (or 457518 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1123313112020 its reverse (202113133211), we get a palindrome (1325426245231).

The spelling of 1123313112020 in words is "one trillion, one hundred twenty-three billion, three hundred thirteen million, one hundred twelve thousand, twenty".