1121013020 has 12 divisors (see below), whose sum is σ = 2354127384. Its totient is φ = 448405200.

The previous prime is 1121012989. The next prime is 1121013037. The reversal of 1121013020 is 203101211.

It is a junction number, because it is equal to n+sod(n) for n = 1121012992 and 1121013010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28025306 + ... + 28025345.

It is an arithmetic number, because the mean of its divisors is an integer number (196177282).

Almost surely, 2^1121013020 is an apocalyptic number.

1121013020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121013020 is an abundant number, since it is smaller than the sum of its proper divisors (1233114364).

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

1121013020 is a wasteful number, since it uses less digits than its factorization.

1121013020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56050660 (or 56050658 counting only the distinct ones).

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

The square root of 1121013020 is about 33481.5325216753. The cubic root of 1121013020 is about 1038.8118272323.

Adding to 1121013020 its reverse (203101211), we get a palindrome (1324114231).

The spelling of 1121013020 in words is "one billion, one hundred twenty-one million, thirteen thousand, twenty".