121202102002139 has 2 divisors, whose sum is σ = 121202102002140. Its totient is φ = 121202102002138.

The previous prime is 121202102002099. The next prime is 121202102002159. The reversal of 121202102002139 is 931200201202121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121202102002139 - 2²⁴ = 121202085224923 is a prime.

It is not a weakly prime, because it can be changed into another prime (121202102002159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60601051001069 + 60601051001070.

It is an arithmetic number, because the mean of its divisors is an integer number (60601051001070).

Almost surely, 2^{121202102002139} is an apocalyptic number.

121202102002139 is a deficient number, since it is larger than the sum of its proper divisors (1).

121202102002139 is an equidigital number, since it uses as much as digits as its factorization.

121202102002139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 121202102002139 in words is "one hundred twenty-one trillion, two hundred two billion, one hundred two million, two thousand, one hundred thirty-nine".