1223358012 has 96 divisors (see below), whose sum is σ = 3389601600. Its totient is φ = 380215296.

The previous prime is 1223357977. The next prime is 1223358013. The reversal of 1223358012 is 2108533221.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223358013) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 197068 + ... + 203180.

It is an arithmetic number, because the mean of its divisors is an integer number (35308350).

Almost surely, 2^1223358012 is an apocalyptic number.

1223358012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223358012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1694800800).

1223358012 is an abundant number, since it is smaller than the sum of its proper divisors (2166243588).

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

1223358012 is a wasteful number, since it uses less digits than its factorization.

1223358012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6252 (or 6244 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1223358012 is about 34976.5351628774. The cubic root of 1223358012 is about 1069.5091969805.

The spelling of 1223358012 in words is "one billion, two hundred twenty-three million, three hundred fifty-eight thousand, twelve".