1212212122049 has 2 divisors, whose sum is σ = 1212212122050. Its totient is φ = 1212212122048.

The previous prime is 1212212122031. The next prime is 1212212122129. The reversal of 1212212122049 is 9402212122121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 956523120400 + 255689001649 = 978020^2 + 505657^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212212122049 - 2¹⁶ = 1212212056513 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212212122349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606106061024 + 606106061025.

It is an arithmetic number, because the mean of its divisors is an integer number (606106061025).

Almost surely, 2^{1212212122049} is an apocalyptic number.

It is an amenable number.

1212212122049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212212122049 is an equidigital number, since it uses as much as digits as its factorization.

1212212122049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 29.

The spelling of 1212212122049 in words is "one trillion, two hundred twelve billion, two hundred twelve million, one hundred twenty-two thousand, forty-nine".