121212002113 has 2 divisors, whose sum is σ = 121212002114. Its totient is φ = 121212002112.

The previous prime is 121212002099. The next prime is 121212002167. The reversal of 121212002113 is 311200212121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66403105344 + 54808896769 = 257688^2 + 234113^2 .

It is a cyclic number.

It is not a de Polignac number, because 121212002113 - 2⁹ = 121212001601 is a prime.

It is not a weakly prime, because it can be changed into another prime (121212005113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60606001056 + 60606001057.

It is an arithmetic number, because the mean of its divisors is an integer number (60606001057).

Almost surely, 2^121212002113 is an apocalyptic number.

It is an amenable number.

121212002113 is a deficient number, since it is larger than the sum of its proper divisors (1).

121212002113 is an equidigital number, since it uses as much as digits as its factorization.

121212002113 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 121212002113 its reverse (311200212121), we get a palindrome (432412214234).

The spelling of 121212002113 in words is "one hundred twenty-one billion, two hundred twelve million, two thousand, one hundred thirteen".