1100120312 has 16 divisors (see below), whose sum is σ = 2129265600. Its totient is φ = 532316160.

The previous prime is 1100120309. The next prime is 1100120401. The reversal of 1100120312 is 2130210011.

It is a junction number, because it is equal to n+sod(n) for n = 1100120293 and 1100120302.

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 3 ways as a sum of consecutive naturals, for example, 2217737 + ... + 2218232.

It is an arithmetic number, because the mean of its divisors is an integer number (133079100).

Almost surely, 2^1100120312 is an apocalyptic number.

It is an amenable number.

1100120312 is a deficient number, since it is larger than the sum of its proper divisors (1029145288).

1100120312 is a wasteful number, since it uses less digits than its factorization.

1100120312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4436006 (or 4436002 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1100120312 is about 33168.0616256060. The cubic root of 1100120312 is about 1032.3177491405.

Adding to 1100120312 its reverse (2130210011), we get a palindrome (3230330323).

It can be divided in two parts, 11001 and 20312, that added together give a palindrome (31313).

The spelling of 1100120312 in words is "one billion, one hundred million, one hundred twenty thousand, three hundred twelve".