1123011020 has 24 divisors (see below), whose sum is σ = 2359114800. Its totient is φ = 449053632.

The previous prime is 1123010983. The next prime is 1123011079. The reversal of 1123011020 is 201103211.

It is a super-2 number, since 2×1123011020² = 2522307502082880800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1123010992 and 1123011010.

It is an unprimeable number.

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, 66611 + ... + 81749.

It is an arithmetic number, because the mean of its divisors is an integer number (98296450).

Almost surely, 2^1123011020 is an apocalyptic number.

1123011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123011020 is an abundant number, since it is smaller than the sum of its proper divisors (1236103780).

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

1123011020 is a wasteful number, since it uses less digits than its factorization.

1123011020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18857 (or 18855 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1123011020 is about 33511.3565825080. The cubic root of 1123011020 is about 1039.4286247538.

Adding to 1123011020 its reverse (201103211), we get a palindrome (1324114231).

The spelling of 1123011020 in words is "one billion, one hundred twenty-three million, eleven thousand, twenty".