121002220221101 has 2 divisors, whose sum is σ = 121002220221102. Its totient is φ = 121002220221100.

The previous prime is 121002220221013. The next prime is 121002220221121. The reversal of 121002220221101 is 101122022200121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111052605422500 + 9949614798601 = 10538150^2 + 3154301^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121002220221101 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121002220221101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121002220221121) 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, 60501110110550 + 60501110110551.

It is an arithmetic number, because the mean of its divisors is an integer number (60501110110551).

Almost surely, 2^{121002220221101} is an apocalyptic number.

It is an amenable number.

121002220221101 is a deficient number, since it is larger than the sum of its proper divisors (1).

121002220221101 is an equidigital number, since it uses as much as digits as its factorization.

121002220221101 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 121002220221101 its reverse (101122022200121), we get a palindrome (222124242421222).

The spelling of 121002220221101 in words is "one hundred twenty-one trillion, two billion, two hundred twenty million, two hundred twenty-one thousand, one hundred one".