120021212001217 has 2 divisors, whose sum is σ = 120021212001218. Its totient is φ = 120021212001216.

The previous prime is 120021212001167. The next prime is 120021212001253. The reversal of 120021212001217 is 712100212120021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90812818739776 + 29208393261441 = 9529576^2 + 5404479^2 .

It is a cyclic number.

It is not a de Polignac number, because 120021212001217 - 2²⁷ = 120021077783489 is a prime.

It is not a weakly prime, because it can be changed into another prime (120021212001017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60010606000608 + 60010606000609.

It is an arithmetic number, because the mean of its divisors is an integer number (60010606000609).

Almost surely, 2^{120021212001217} is an apocalyptic number.

It is an amenable number.

120021212001217 is a deficient number, since it is larger than the sum of its proper divisors (1).

120021212001217 is an equidigital number, since it uses as much as digits as its factorization.

120021212001217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 120021212001217 its reverse (712100212120021), we get a palindrome (832121424121238).

The spelling of 120021212001217 in words is "one hundred twenty trillion, twenty-one billion, two hundred twelve million, one thousand, two hundred seventeen".