121210001222201 has 2 divisors, whose sum is σ = 121210001222202. Its totient is φ = 121210001222200.

The previous prime is 121210001222171. The next prime is 121210001222207. The reversal of 121210001222201 is 102222100012121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111700801699600 + 9509199522601 = 10568860^2 + 3083699^2 .

It is a cyclic number.

It is not a de Polignac number, because 121210001222201 - 2²² = 121209997027897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121210001222201.

It is not a weakly prime, because it can be changed into another prime (121210001222207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605000611100 + 60605000611101.

It is an arithmetic number, because the mean of its divisors is an integer number (60605000611101).

Almost surely, 2^{121210001222201} is an apocalyptic number.

It is an amenable number.

121210001222201 is a deficient number, since it is larger than the sum of its proper divisors (1).

121210001222201 is an equidigital number, since it uses as much as digits as its factorization.

121210001222201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121210001222201 its reverse (102222100012121), we get a palindrome (223432101234322).

The spelling of 121210001222201 in words is "one hundred twenty-one trillion, two hundred ten billion, one million, two hundred twenty-two thousand, two hundred one".