2120203017 has 6 divisors (see below), whose sum is σ = 3062515482. Its totient is φ = 1413468672.

The previous prime is 2120202983. The next prime is 2120203031. The reversal of 2120203017 is 7103020212.

It can be written as a sum of positive squares in only one way, i.e., 1618935696 + 501267321 = 40236^2 + 22389^2 .

It is not a de Polignac number, because 2120203017 - 2¹¹ = 2120200969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2120203037) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117789048 + ... + 117789065.

It is an arithmetic number, because the mean of its divisors is an integer number (510419247).

Almost surely, 2^2120203017 is an apocalyptic number.

It is an amenable number.

2120203017 is a deficient number, since it is larger than the sum of its proper divisors (942312465).

2120203017 is a wasteful number, since it uses less digits than its factorization.

2120203017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235578119 (or 235578116 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 2120203017 is about 46045.6623038479. The cubic root of 2120203017 is about 1284.6726630176.

Adding to 2120203017 its reverse (7103020212), we get a palindrome (9223223229).

The spelling of 2120203017 in words is "two billion, one hundred twenty million, two hundred three thousand, seventeen".