66122123 has 4 divisors (see below), whose sum is σ = 66140160. Its totient is φ = 66104088.

The previous prime is 66122113. The next prime is 66122137. The reversal of 66122123 is 32122166.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66122123 - 2⁴ = 66122107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66122113) 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, 1340 + ... + 11577.

It is an arithmetic number, because the mean of its divisors is an integer number (16535040).

Almost surely, 2^66122123 is an apocalyptic number.

66122123 is a deficient number, since it is larger than the sum of its proper divisors (18037).

66122123 is a wasteful number, since it uses less digits than its factorization.

66122123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18036.

The product of its digits is 864, while the sum is 23.

The square root of 66122123 is about 8131.5510820507. The cubic root of 66122123 is about 404.3731052278.

Adding to 66122123 its reverse (32122166), we get a palindrome (98244289).

The spelling of 66122123 in words is "sixty-six million, one hundred twenty-two thousand, one hundred twenty-three".