12212120113 has 2 divisors, whose sum is σ = 12212120114. Its totient is φ = 12212120112.

The previous prime is 12212120101. The next prime is 12212120159. The reversal of 12212120113 is 31102121221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11149881649 + 1062238464 = 105593^2 + 32592^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12212120113 is a prime.

It is not a weakly prime, because it can be changed into another prime (12212120413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106060056 + 6106060057.

It is an arithmetic number, because the mean of its divisors is an integer number (6106060057).

Almost surely, 2^12212120113 is an apocalyptic number.

It is an amenable number.

12212120113 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212120113 is an equidigital number, since it uses as much as digits as its factorization.

12212120113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12212120113 its reverse (31102121221), we get a palindrome (43314241334).

The spelling of 12212120113 in words is "twelve billion, two hundred twelve million, one hundred twenty thousand, one hundred thirteen".