667122221017 has 16 divisors (see below), whose sum is σ = 802582133760. Its totient is φ = 541703674512.

The previous prime is 667122220981. The next prime is 667122221039. The reversal of 667122221017 is 710122221766.

It is not a de Polignac number, because 667122221017 - 2²⁷ = 666988003289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667122221617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4437828 + ... + 4585690.

It is an arithmetic number, because the mean of its divisors is an integer number (50161383360).

Almost surely, 2^667122221017 is an apocalyptic number.

It is an amenable number.

667122221017 is a deficient number, since it is larger than the sum of its proper divisors (135459912743).

667122221017 is a wasteful number, since it uses less digits than its factorization.

667122221017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181812.

The product of its (nonzero) digits is 28224, while the sum is 37.

The spelling of 667122221017 in words is "six hundred sixty-seven billion, one hundred twenty-two million, two hundred twenty-one thousand, seventeen".