1223223012 has 96 divisors (see below), whose sum is σ = 3466444800. Its totient is φ = 369943200.

The previous prime is 1223223011. The next prime is 1223223061. The reversal of 1223223012 is 2103223221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1223223011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1176789 + ... + 1177827.

It is an arithmetic number, because the mean of its divisors is an integer number (36108800).

Almost surely, 2^1223223012 is an apocalyptic number.

1223223012 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 1223223012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1733222400).

1223223012 is an abundant number, since it is smaller than the sum of its proper divisors (2243221788).

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

1223223012 is a wasteful number, since it uses less digits than its factorization.

1223223012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2054 (or 2046 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1223223012 is about 34974.6052443770. The cubic root of 1223223012 is about 1069.4698547080.

Adding to 1223223012 its reverse (2103223221), we get a palindrome (3326446233).

The spelling of 1223223012 in words is "one billion, two hundred twenty-three million, two hundred twenty-three thousand, twelve".