1223223212 has 6 divisors (see below), whose sum is σ = 2140640628. Its totient is φ = 611611604.

The previous prime is 1223223167. The next prime is 1223223217. The reversal of 1223223212 is 2123223221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1223223217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152902898 + ... + 152902905.

It is an arithmetic number, because the mean of its divisors is an integer number (356773438).

Almost surely, 2^1223223212 is an apocalyptic number.

It is an amenable number.

1223223212 is a deficient number, since it is larger than the sum of its proper divisors (917417416).

1223223212 is a wasteful number, since it uses less digits than its factorization.

1223223212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305805807 (or 305805805 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 1223223212 is about 34974.6081035942. The cubic root of 1223223212 is about 1069.4699129950.

Adding to 1223223212 its reverse (2123223221), we get a palindrome (3346446433).

Subtracting 1223223212 from its reverse (2123223221), we obtain a palindrome (900000009).

The spelling of 1223223212 in words is "one billion, two hundred twenty-three million, two hundred twenty-three thousand, two hundred twelve".