121212111210061 has 2 divisors, whose sum is σ = 121212111210062. Its totient is φ = 121212111210060.

The previous prime is 121212111209971. The next prime is 121212111210083. The reversal of 121212111210061 is 160012111212121.

It is an a-pointer prime, because the next prime (121212111210083) can be obtained adding 121212111210061 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121173994504836 + 38116705225 = 11007906^2 + 195235^2 .

It is a cyclic number.

It is not a de Polignac number, because 121212111210061 - 2⁷ = 121212111209933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121212111210461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60606055605030 + 60606055605031.

It is an arithmetic number, because the mean of its divisors is an integer number (60606055605031).

Almost surely, 2^{121212111210061} is an apocalyptic number.

It is an amenable number.

121212111210061 is a deficient number, since it is larger than the sum of its proper divisors (1).

121212111210061 is an equidigital number, since it uses as much as digits as its factorization.

121212111210061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 22.

Adding to 121212111210061 its reverse (160012111212121), we get a palindrome (281224222422182).

The spelling of 121212111210061 in words is "one hundred twenty-one trillion, two hundred twelve billion, one hundred eleven million, two hundred ten thousand, sixty-one".