12213123213111 has 16 divisors (see below), whose sum is σ = 16447058656608. Its totient is φ = 8060651280000.

The previous prime is 12213123213107. The next prime is 12213123213131. The reversal of 12213123213111 is 11131232131221.

It is not a de Polignac number, because 12213123213111 - 2² = 12213123213107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213123213131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 964485 + ... + 5035521.

It is an arithmetic number, because the mean of its divisors is an integer number (1027941166038).

Almost surely, 2^{12213123213111} is an apocalyptic number.

12213123213111 is a deficient number, since it is larger than the sum of its proper divisors (4233935443497).

12213123213111 is a wasteful number, since it uses less digits than its factorization.

12213123213111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4081042.

The product of its digits is 432, while the sum is 24.

Adding to 12213123213111 its reverse (11131232131221), we get a palindrome (23344355344332).

The spelling of 12213123213111 in words is "twelve trillion, two hundred thirteen billion, one hundred twenty-three million, two hundred thirteen thousand, one hundred eleven".