12213103381 has 2 divisors, whose sum is σ = 12213103382. Its totient is φ = 12213103380.

The previous prime is 12213103379. The next prime is 12213103391. The reversal of 12213103381 is 18330131221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10397065156 + 1816038225 = 101966^2 + 42615^2 .

It is a cyclic number.

It is not a de Polignac number, because 12213103381 - 2¹ = 12213103379 is a prime.

It is a super-2 number, since 2×12213103381² (a number of 21 digits) contains 22 as substring.

Together with 12213103379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12213103391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106551690 + 6106551691.

It is an arithmetic number, because the mean of its divisors is an integer number (6106551691).

Almost surely, 2^12213103381 is an apocalyptic number.

It is an amenable number.

12213103381 is a deficient number, since it is larger than the sum of its proper divisors (1).

12213103381 is an equidigital number, since it uses as much as digits as its factorization.

12213103381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 12213103381 in words is "twelve billion, two hundred thirteen million, one hundred three thousand, three hundred eighty-one".