121201010309 has 2 divisors, whose sum is σ = 121201010310. Its totient is φ = 121201010308.

The previous prime is 121201010299. The next prime is 121201010327. The reversal of 121201010309 is 903010102121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115284016225 + 5916994084 = 339535^2 + 76922^2 .

It is a cyclic number.

It is not a de Polignac number, because 121201010309 - 2²⁰ = 121199961733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121201010339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600505154 + 60600505155.

It is an arithmetic number, because the mean of its divisors is an integer number (60600505155).

Almost surely, 2^121201010309 is an apocalyptic number.

It is an amenable number.

121201010309 is a deficient number, since it is larger than the sum of its proper divisors (1).

121201010309 is an equidigital number, since it uses as much as digits as its factorization.

121201010309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 20.

The spelling of 121201010309 in words is "one hundred twenty-one billion, two hundred one million, ten thousand, three hundred nine".