121221020002211 has 2 divisors, whose sum is σ = 121221020002212. Its totient is φ = 121221020002210.

The previous prime is 121221020002177. The next prime is 121221020002249. The reversal of 121221020002211 is 112200020122121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121221020002211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121221020002211.

It is not a weakly prime, because it can be changed into another prime (121221020022211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610510001105 + 60610510001106.

It is an arithmetic number, because the mean of its divisors is an integer number (60610510001106).

Almost surely, 2^{121221020002211} is an apocalyptic number.

121221020002211 is a deficient number, since it is larger than the sum of its proper divisors (1).

121221020002211 is an equidigital number, since it uses as much as digits as its factorization.

121221020002211 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 121221020002211 its reverse (112200020122121), we get a palindrome (233421040124332).

The spelling of 121221020002211 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, twenty million, two thousand, two hundred eleven".