1665101122 has 4 divisors (see below), whose sum is σ = 2497651686. Its totient is φ = 832550560.

The previous prime is 1665101117. The next prime is 1665101173. The reversal of 1665101122 is 2211015661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2211015661 = 13721 ⋅161141.

It can be written as a sum of positive squares in only one way, i.e., 1037548521 + 627552601 = 32211^2 + 25051^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 416275279 + ... + 416275282.

Almost surely, 2^1665101122 is an apocalyptic number.

1665101122 is a deficient number, since it is larger than the sum of its proper divisors (832550564).

1665101122 is an equidigital number, since it uses as much as digits as its factorization.

1665101122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832550563.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 1665101122 is about 40805.6506136099. The cubic root of 1665101122 is about 1185.2597535105.

Adding to 1665101122 its reverse (2211015661), we get a palindrome (3876116783).

The spelling of 1665101122 in words is "one billion, six hundred sixty-five million, one hundred one thousand, one hundred twenty-two".