121202009999999 has 2 divisors, whose sum is σ = 121202010000000. Its totient is φ = 121202009999998.

The previous prime is 121202009999989. The next prime is 121202010000107. The reversal of 121202009999999 is 999999900202121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121202009999999 - 2¹⁶ = 121202009934463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121202009999989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60601004999999 + 60601005000000.

It is an arithmetic number, because the mean of its divisors is an integer number (60601005000000).

Almost surely, 2^{121202009999999} is an apocalyptic number.

121202009999999 is a deficient number, since it is larger than the sum of its proper divisors (1).

121202009999999 is an equidigital number, since it uses as much as digits as its factorization.

121202009999999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38263752, while the sum is 71.

The spelling of 121202009999999 in words is "one hundred twenty-one trillion, two hundred two billion, nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".