20122017 has 4 divisors (see below), whose sum is σ = 26829360. Its totient is φ = 13414676.

The previous prime is 20121989. The next prime is 20122031. The reversal of 20122017 is 71022102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20122017 - 2¹⁰ = 20120993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20121987 and 20122005.

It is not an unprimeable number, because it can be changed into a prime (20122087) 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, 3353667 + ... + 3353672.

It is an arithmetic number, because the mean of its divisors is an integer number (6707340).

Almost surely, 2^20122017 is an apocalyptic number.

It is an amenable number.

20122017 is a deficient number, since it is larger than the sum of its proper divisors (6707343).

20122017 is an equidigital number, since it uses as much as digits as its factorization.

20122017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6707342.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 20122017 is about 4485.7571267290. The cubic root of 20122017 is about 271.9926513658.

Adding to 20122017 its reverse (71022102), we get a palindrome (91144119).

The spelling of 20122017 in words is "twenty million, one hundred twenty-two thousand, seventeen".