12121222113323 has 4 divisors (see below), whose sum is σ = 12648231770448. Its totient is φ = 11594212456200.

The previous prime is 12121222113293. The next prime is 12121222113379. The reversal of 12121222113323 is 32331122212121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12121222113323 - 2⁸ = 12121222113067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12121222113292 and 12121222113301.

It is not an unprimeable number, because it can be changed into a prime (12121222110323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263504828528 + ... + 263504828573.

It is an arithmetic number, because the mean of its divisors is an integer number (3162057942612).

Almost surely, 2^{12121222113323} is an apocalyptic number.

12121222113323 is a deficient number, since it is larger than the sum of its proper divisors (527009657125).

12121222113323 is an equidigital number, since it uses as much as digits as its factorization.

12121222113323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527009657124.

The product of its digits is 1728, while the sum is 26.

Adding to 12121222113323 its reverse (32331122212121), we get a palindrome (44452344325444).

The spelling of 12121222113323 in words is "twelve trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred thirteen thousand, three hundred twenty-three".