121012010310209 has 2 divisors, whose sum is σ = 121012010310210. Its totient is φ = 121012010310208.

The previous prime is 121012010309987. The next prime is 121012010310211. The reversal of 121012010310209 is 902013010210121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105197843560000 + 15814166750209 = 10256600^2 + 3976703^2 .

It is a cyclic number.

It is not a de Polignac number, because 121012010310209 - 2¹² = 121012010306113 is a prime.

Together with 121012010310211, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121012010360209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60506005155104 + 60506005155105.

It is an arithmetic number, because the mean of its divisors is an integer number (60506005155105).

Almost surely, 2^{121012010310209} is an apocalyptic number.

It is an amenable number.

121012010310209 is a deficient number, since it is larger than the sum of its proper divisors (1).

121012010310209 is an equidigital number, since it uses as much as digits as its factorization.

121012010310209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 121012010310209 in words is "one hundred twenty-one trillion, twelve billion, ten million, three hundred ten thousand, two hundred nine".