122666771 has 4 divisors (see below), whose sum is σ = 124394544. Its totient is φ = 120939000.

The previous prime is 122666759. The next prime is 122666801. The reversal of 122666771 is 177666221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 177666221 = 61 ⋅2912561.

It is a cyclic number.

It is not a de Polignac number, because 122666771 - 2¹⁰ = 122665747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122666701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 863780 + ... + 863921.

It is an arithmetic number, because the mean of its divisors is an integer number (31098636).

Almost surely, 2^122666771 is an apocalyptic number.

122666771 is a deficient number, since it is larger than the sum of its proper divisors (1727773).

122666771 is an equidigital number, since it uses as much as digits as its factorization.

122666771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727772.

The product of its digits is 42336, while the sum is 38.

The square root of 122666771 is about 11075.5031939863. The cubic root of 122666771 is about 496.8694684510.

The spelling of 122666771 in words is "one hundred twenty-two million, six hundred sixty-six thousand, seven hundred seventy-one".