1223222712 has 32 divisors (see below), whose sum is σ = 3067908480. Its totient is φ = 406427360.

The previous prime is 1223222699. The next prime is 1223222713. The reversal of 1223222712 is 2172223221.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223222713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74478 + ... + 89405.

It is an arithmetic number, because the mean of its divisors is an integer number (95872140).

Almost surely, 2^1223222712 is an apocalyptic number.

1223222712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1223222712 is an abundant number, since it is smaller than the sum of its proper divisors (1844685768).

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

1223222712 is a wasteful number, since it uses less digits than its factorization.

1223222712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164203 (or 164199 counting only the distinct ones).

The product of its digits is 1344, while the sum is 24.

The square root of 1223222712 is about 34974.6009555506. The cubic root of 1223222712 is about 1069.4697672775.

Adding to 1223222712 its reverse (2172223221), we get a palindrome (3395445933).

The spelling of 1223222712 in words is "one billion, two hundred twenty-three million, two hundred twenty-two thousand, seven hundred twelve".