1223113311212 has 48 divisors (see below), whose sum is σ = 2440823740992. Its totient is φ = 531278499840.

The previous prime is 1223113311151. The next prime is 1223113311227. The reversal of 1223113311212 is 2121133113221.

It is a happy number.

It is a super-4 number, since 4×1223113311212⁴ (a number of 49 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30593828 + ... + 30633780.

It is an arithmetic number, because the mean of its divisors is an integer number (50850494604).

Almost surely, 2^{1223113311212} is an apocalyptic number.

It is an amenable number.

1223113311212 is a deficient number, since it is larger than the sum of its proper divisors (1217710429780).

1223113311212 is a wasteful number, since it uses less digits than its factorization.

1223113311212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74618 (or 74616 counting only the distinct ones).

The product of its digits is 432, while the sum is 23.

Adding to 1223113311212 its reverse (2121133113221), we get a palindrome (3344246424433).

The spelling of 1223113311212 in words is "one trillion, two hundred twenty-three billion, one hundred thirteen million, three hundred eleven thousand, two hundred twelve".