120666654422217 has 8 divisors (see below), whose sum is σ = 178765413958880. Its totient is φ = 80444436281460.

The previous prime is 120666654422183. The next prime is 120666654422227. The reversal of 120666654422217 is 712224456666021.

It is not a de Polignac number, because 120666654422217 - 2¹⁰ = 120666654421193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120666654422227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2234567674459 + ... + 2234567674512.

It is an arithmetic number, because the mean of its divisors is an integer number (22345676744860).

Almost surely, 2^{120666654422217} is an apocalyptic number.

It is an amenable number.

120666654422217 is a deficient number, since it is larger than the sum of its proper divisors (58098759536663).

120666654422217 is an equidigital number, since it uses as much as digits as its factorization.

120666654422217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4469135348980 (or 4469135348974 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 54.

The spelling of 120666654422217 in words is "one hundred twenty trillion, six hundred sixty-six billion, six hundred fifty-four million, four hundred twenty-two thousand, two hundred seventeen".