121202220209971 has 2 divisors, whose sum is σ = 121202220209972. Its totient is φ = 121202220209970.

The previous prime is 121202220209867. The next prime is 121202220210011. The reversal of 121202220209971 is 179902022202121.

It is an a-pointer prime, because the next prime (121202220210011) can be obtained adding 121202220209971 to its sum of digits (40).

It is a strong prime.

It is an emirp because it is prime and its reverse (179902022202121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121202220209971 - 2¹⁷ = 121202220078899 is a prime.

It is not a weakly prime, because it can be changed into another prime (121202220279971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60601110104985 + 60601110104986.

It is an arithmetic number, because the mean of its divisors is an integer number (60601110104986).

Almost surely, 2^{121202220209971} is an apocalyptic number.

121202220209971 is a deficient number, since it is larger than the sum of its proper divisors (1).

121202220209971 is an equidigital number, since it uses as much as digits as its factorization.

121202220209971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 40.

The spelling of 121202220209971 in words is "one hundred twenty-one trillion, two hundred two billion, two hundred twenty million, two hundred nine thousand, nine hundred seventy-one".