12213321023131 has 4 divisors (see below), whose sum is σ = 12213741722472. Its totient is φ = 12212900323792.

The previous prime is 12213321023119. The next prime is 12213321023237. The reversal of 12213321023131 is 13132012331221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12213321023131 is a prime.

It is a super-2 number, since 2×12213321023131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12213321023096 and 12213321023105.

It is not an unprimeable number, because it can be changed into a prime (12213321033131) 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, 210306121 + ... + 210364186.

It is an arithmetic number, because the mean of its divisors is an integer number (3053435430618).

Almost surely, 2^{12213321023131} is an apocalyptic number.

12213321023131 is a deficient number, since it is larger than the sum of its proper divisors (420699341).

12213321023131 is an equidigital number, since it uses as much as digits as its factorization.

12213321023131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420699340.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 12213321023131 its reverse (13132012331221), we get a palindrome (25345333354352).

The spelling of 12213321023131 in words is "twelve trillion, two hundred thirteen billion, three hundred twenty-one million, twenty-three thousand, one hundred thirty-one".