1121513020 has 24 divisors (see below), whose sum is σ = 2356174800. Its totient is φ = 448415232.

The previous prime is 1121512991. The next prime is 1121513033. The reversal of 1121513020 is 203151211.

It is a junction number, because it is equal to n+sod(n) for n = 1121512985 and 1121513003.

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, 42636 + ... + 63724.

It is an arithmetic number, because the mean of its divisors is an integer number (98173950).

Almost surely, 2^1121513020 is an apocalyptic number.

1121513020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121513020 is an abundant number, since it is smaller than the sum of its proper divisors (1234661780).

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

1121513020 is a wasteful number, since it uses less digits than its factorization.

1121513020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23757 (or 23755 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1121513020 is about 33488.9984920421. The cubic root of 1121513020 is about 1038.9662496760.

Adding to 1121513020 its reverse (203151211), we get a palindrome (1324664231).

The spelling of 1121513020 in words is "one billion, one hundred twenty-one million, five hundred thirteen thousand, twenty".