122131666 has 8 divisors (see below), whose sum is σ = 184878540. Its totient is φ = 60505488.

The previous prime is 122131657. The next prime is 122131717. The reversal of 122131666 is 666131221.

It can be written as a sum of positive squares in 2 ways, for example, as 102515625 + 19616041 = 10125^2 + 4429^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×122131666² = 29832287679871112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279901 + ... + 280336.

Almost surely, 2^122131666 is an apocalyptic number.

122131666 is a deficient number, since it is larger than the sum of its proper divisors (62746874).

122131666 is a wasteful number, since it uses less digits than its factorization.

122131666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560348.

The product of its digits is 2592, while the sum is 28.

The square root of 122131666 is about 11051.3196497070. The cubic root of 122131666 is about 496.1459231812.

Adding to 122131666 its reverse (666131221), we get a palindrome (788262887).

The spelling of 122131666 in words is "one hundred twenty-two million, one hundred thirty-one thousand, six hundred sixty-six".