2012398217 has 4 divisors (see below), whose sum is σ = 2066787396. Its totient is φ = 1958009040.

The previous prime is 2012398207. The next prime is 2012398261. The reversal of 2012398217 is 7128932102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7128932102 = 2 ⋅3564466051.

It can be written as a sum of positive squares in 2 ways, for example, as 1852097296 + 160300921 = 43036^2 + 12661^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012398217 - 2¹⁶ = 2012332681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012398207) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 27194534 + ... + 27194607.

It is an arithmetic number, because the mean of its divisors is an integer number (516696849).

Almost surely, 2^2012398217 is an apocalyptic number.

It is an amenable number.

2012398217 is a deficient number, since it is larger than the sum of its proper divisors (54389179).

2012398217 is an equidigital number, since it uses as much as digits as its factorization.

2012398217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54389178.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 2012398217 is about 44859.7616690058. The cubic root of 2012398217 is about 1262.5191510607.

The spelling of 2012398217 in words is "two billion, twelve million, three hundred ninety-eight thousand, two hundred seventeen".