20012165 has 8 divisors (see below), whose sum is σ = 24056448. Its totient is φ = 15981840.

The previous prime is 20012119. The next prime is 20012171. The reversal of 20012165 is 56121002.

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

It is not a de Polignac number, because 20012165 - 2⁶ = 20012101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17 + ... + 6326.

It is an arithmetic number, because the mean of its divisors is an integer number (3007056).

Almost surely, 2^20012165 is an apocalyptic number.

It is an amenable number.

20012165 is a deficient number, since it is larger than the sum of its proper divisors (4044283).

20012165 is an equidigital number, since it uses as much as digits as its factorization.

20012165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6979.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 20012165 is about 4473.4958365913. The cubic root of 20012165 is about 271.4967853221.

Adding to 20012165 its reverse (56121002), we get a palindrome (76133167).

The spelling of 20012165 in words is "twenty million, twelve thousand, one hundred sixty-five".