1121313020 has 24 divisors (see below), whose sum is σ = 2457139104. Its totient is φ = 429023936.

The previous prime is 1121313007. The next prime is 1121313031. The reversal of 1121313020 is 203131211.

It is a junction number, because it is equal to n+sod(n) for n = 1121312986 and 1121313004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1218359 + ... + 1219278.

It is an arithmetic number, because the mean of its divisors is an integer number (102380796).

Almost surely, 2^1121313020 is an apocalyptic number.

1121313020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121313020 is an abundant number, since it is smaller than the sum of its proper divisors (1335826084).

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

1121313020 is a wasteful number, since it uses less digits than its factorization.

1121313020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2437669 (or 2437667 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1121313020 is about 33486.0123036470. The cubic root of 1121313020 is about 1038.9044862073.

Adding to 1121313020 its reverse (203131211), we get a palindrome (1324444231).

The spelling of 1121313020 in words is "one billion, one hundred twenty-one million, three hundred thirteen thousand, twenty".