121221011210239 has 2 divisors, whose sum is σ = 121221011210240. Its totient is φ = 121221011210238.

The previous prime is 121221011210203. The next prime is 121221011210281. The reversal of 121221011210239 is 932012110122121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121221011210239 - 2¹³ = 121221011202047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121221011210339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610505605119 + 60610505605120.

It is an arithmetic number, because the mean of its divisors is an integer number (60610505605120).

Almost surely, 2^{121221011210239} is an apocalyptic number.

121221011210239 is a deficient number, since it is larger than the sum of its proper divisors (1).

121221011210239 is an equidigital number, since it uses as much as digits as its factorization.

121221011210239 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 28.

The spelling of 121221011210239 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, eleven million, two hundred ten thousand, two hundred thirty-nine".