122105665 has 16 divisors (see below), whose sum is σ = 160110720. Its totient is φ = 88657920.

The previous prime is 122105663. The next prime is 122105701. The reversal of 122105665 is 566501221.

It is not a de Polignac number, because 122105665 - 2¹ = 122105663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122105663) 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, 40852 + ... + 43738.

It is an arithmetic number, because the mean of its divisors is an integer number (10006920).

Almost surely, 2^122105665 is an apocalyptic number.

It is an amenable number.

122105665 is a deficient number, since it is larger than the sum of its proper divisors (38005055).

122105665 is a wasteful number, since it uses less digits than its factorization.

122105665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3672.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 122105665 is about 11050.1432117416. The cubic root of 122105665 is about 496.1107119862.

Adding to 122105665 its reverse (566501221), we get a palindrome (688606886).

The spelling of 122105665 in words is "one hundred twenty-two million, one hundred five thousand, six hundred sixty-five".