1121331012 has 24 divisors (see below), whose sum is σ = 2617087200. Its totient is φ = 373684416.

The previous prime is 1121330989. The next prime is 1121331047. The reversal of 1121331012 is 2101331211.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1121330982 and 1121331000.

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 7 ways as a sum of consecutive naturals, for example, 53539 + ... + 71477.

It is an arithmetic number, because the mean of its divisors is an integer number (109045300).

Almost surely, 2^1121331012 is an apocalyptic number.

1121331012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1121331012 is an abundant number, since it is smaller than the sum of its proper divisors (1495756188).

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

1121331012 is a wasteful number, since it uses less digits than its factorization.

1121331012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23155 (or 23153 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1121331012 is about 33486.2809520556. The cubic root of 1121331012 is about 1038.9100427495.

Adding to 1121331012 its reverse (2101331211), we get a palindrome (3222662223).

The spelling of 1121331012 in words is "one billion, one hundred twenty-one million, three hundred thirty-one thousand, twelve".