1223120012 has 12 divisors (see below), whose sum is σ = 2266369560. Its totient is φ = 575585856.

The previous prime is 1223120011. The next prime is 1223120047. The reversal of 1223120012 is 2100213221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1223120011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8993462 + ... + 8993597.

It is an arithmetic number, because the mean of its divisors is an integer number (188864130).

Almost surely, 2^1223120012 is an apocalyptic number.

It is an amenable number.

1223120012 is a deficient number, since it is larger than the sum of its proper divisors (1043249548).

1223120012 is a wasteful number, since it uses less digits than its factorization.

1223120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17987080 (or 17987078 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1223120012 is about 34973.1327164153. The cubic root of 1223120012 is about 1069.4398360644.

Adding to 1223120012 its reverse (2100213221), we get a palindrome (3323333233).

The spelling of 1223120012 in words is "one billion, two hundred twenty-three million, one hundred twenty thousand, twelve".