1121222012 has 48 divisors (see below), whose sum is σ = 2218648320. Its totient is φ = 492979200.

The previous prime is 1121221999. The next prime is 1121222051. The reversal of 1121222012 is 2102221211.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51962 + ... + 70302.

It is an arithmetic number, because the mean of its divisors is an integer number (46221840).

Almost surely, 2^1121222012 is an apocalyptic number.

It is an amenable number.

1121222012 is a deficient number, since it is larger than the sum of its proper divisors (1097426308).

1121222012 is a wasteful number, since it uses less digits than its factorization.

1121222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18422 (or 18420 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1121222012 is about 33484.6533803174. The cubic root of 1121222012 is about 1038.8763789271.

Adding to 1121222012 its reverse (2102221211), we get a palindrome (3223443223).

The spelling of 1121222012 in words is "one billion, one hundred twenty-one million, two hundred twenty-two thousand, twelve".