1121020312 has 16 divisors (see below), whose sum is σ = 2146635360. Its totient is φ = 548584224.

The previous prime is 1121020297. The next prime is 1121020321. The reversal of 1121020312 is 2130201211.

It is a junction number, because it is equal to n+sod(n) for n = 1121020292 and 1121020301.

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, 1490343 + ... + 1491094.

It is an arithmetic number, because the mean of its divisors is an integer number (134164710).

Almost surely, 2^1121020312 is an apocalyptic number.

It is an amenable number.

1121020312 is a deficient number, since it is larger than the sum of its proper divisors (1025615048).

1121020312 is a wasteful number, since it uses less digits than its factorization.

1121020312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2981490 (or 2981486 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1121020312 is about 33481.6414173499. The cubic root of 1121020312 is about 1038.8140796591.

Adding to 1121020312 its reverse (2130201211), we get a palindrome (3251221523).

The spelling of 1121020312 in words is "one billion, one hundred twenty-one million, twenty thousand, three hundred twelve".