121012111102213 has 2 divisors, whose sum is σ = 121012111102214. Its totient is φ = 121012111102212.

The previous prime is 121012111102189. The next prime is 121012111102243. The reversal of 121012111102213 is 312201111210121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63259148487844 + 57752962614369 = 7953562^2 + 7599537^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121012111102213 is a prime.

It is a super-3 number, since 3×121012111102213³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121012111102243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60506055551106 + 60506055551107.

It is an arithmetic number, because the mean of its divisors is an integer number (60506055551107).

Almost surely, 2^{121012111102213} is an apocalyptic number.

It is an amenable number.

121012111102213 is a deficient number, since it is larger than the sum of its proper divisors (1).

121012111102213 is an equidigital number, since it uses as much as digits as its factorization.

121012111102213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 121012111102213 its reverse (312201111210121), we get a palindrome (433213222312334).

The spelling of 121012111102213 in words is "one hundred twenty-one trillion, twelve billion, one hundred eleven million, one hundred two thousand, two hundred thirteen".