1121322012 has 24 divisors (see below), whose sum is σ = 2754124800. Its totient is φ = 354101616.

The previous prime is 1121321977. The next prime is 1121322047. The reversal of 1121322012 is 2102231211.

It is an interprime number because it is at equal distance from previous prime (1121321977) and next prime (1121322047).

It is a junction number, because it is equal to n+sod(n) for n = 1121321982 and 1121322000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2458812 + ... + 2459267.

It is an arithmetic number, because the mean of its divisors is an integer number (114755200).

Almost surely, 2^1121322012 is an apocalyptic number.

1121322012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1121322012 is an abundant number, since it is smaller than the sum of its proper divisors (1632802788).

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

1121322012 is a wasteful number, since it uses less digits than its factorization.

1121322012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4918105 (or 4918103 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1121322012 is about 33486.1465683945. The cubic root of 1121322012 is about 1038.9072632505.

Adding to 1121322012 its reverse (2102231211), we get a palindrome (3223553223).

The spelling of 1121322012 in words is "one billion, one hundred twenty-one million, three hundred twenty-two thousand, twelve".