1223112012311 has 24 divisors (see below), whose sum is σ = 1438962291360. Its totient is φ = 1036478268672.

The previous prime is 1223112012299. The next prime is 1223112012313. The reversal of 1223112012311 is 1132102113221.

It is not a de Polignac number, because 1223112012311 - 2¹⁰ = 1223112011287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223112012313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70216475 + ... + 70233891.

It is an arithmetic number, because the mean of its divisors is an integer number (59956762140).

Almost surely, 2^{1223112012311} is an apocalyptic number.

1223112012311 is a deficient number, since it is larger than the sum of its proper divisors (215850279049).

1223112012311 is a wasteful number, since it uses less digits than its factorization.

1223112012311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33623 (or 33616 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1223112012311 its reverse (1132102113221), we get a palindrome (2355214125532).

The spelling of 1223112012311 in words is "one trillion, two hundred twenty-three billion, one hundred twelve million, twelve thousand, three hundred eleven".