1223331243212 has 48 divisors (see below), whose sum is σ = 2323092273600. Its totient is φ = 560315750400.

The previous prime is 1223331243187. The next prime is 1223331243287. The reversal of 1223331243212 is 2123421333221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7845464 + ... + 7999872.

It is an arithmetic number, because the mean of its divisors is an integer number (48397755700).

Almost surely, 2^{1223331243212} is an apocalyptic number.

It is an amenable number.

1223331243212 is a deficient number, since it is larger than the sum of its proper divisors (1099761030388).

1223331243212 is a wasteful number, since it uses less digits than its factorization.

1223331243212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155586 (or 155584 counting only the distinct ones).

The product of its digits is 10368, while the sum is 29.

Adding to 1223331243212 its reverse (2123421333221), we get a palindrome (3346752576433).

Subtracting 1223331243212 from its reverse (2123421333221), we obtain a palindrome (900090090009).

The spelling of 1223331243212 in words is "one trillion, two hundred twenty-three billion, three hundred thirty-one million, two hundred forty-three thousand, two hundred twelve".