12213313213031 has 4 divisors (see below), whose sum is σ = 13958072243472. Its totient is φ = 10468554182592.

The previous prime is 12213313212959. The next prime is 12213313213033. The reversal of 12213313213031 is 13031231331221.

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 12213313213031 - 2¹⁸ = 12213312950887 is a prime.

It is a super-2 number, since 2×12213313213031² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213313213033) 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, 872379515210 + ... + 872379515223.

It is an arithmetic number, because the mean of its divisors is an integer number (3489518060868).

Almost surely, 2^{12213313213031} is an apocalyptic number.

12213313213031 is a deficient number, since it is larger than the sum of its proper divisors (1744759030441).

12213313213031 is an equidigital number, since it uses as much as digits as its factorization.

12213313213031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1744759030440.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 12213313213031 its reverse (13031231331221), we get a palindrome (25244544544252).

The spelling of 12213313213031 in words is "twelve trillion, two hundred thirteen billion, three hundred thirteen million, two hundred thirteen thousand, thirty-one".