2102619217 has 2 divisors, whose sum is σ = 2102619218. Its totient is φ = 2102619216.

The previous prime is 2102619199. The next prime is 2102619227. The reversal of 2102619217 is 7129162012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2095442176 + 7177041 = 45776^2 + 2679^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102619217 - 2²⁷ = 1968401489 is a prime.

It is not a weakly prime, because it can be changed into another prime (2102619227) 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 as a sum of consecutive naturals, namely, 1051309608 + 1051309609.

It is an arithmetic number, because the mean of its divisors is an integer number (1051309609).

Almost surely, 2^2102619217 is an apocalyptic number.

It is an amenable number.

2102619217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102619217 is an equidigital number, since it uses as much as digits as its factorization.

2102619217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 2102619217 is about 45854.3260445511. The cubic root of 2102619217 is about 1281.1113429582. Note that the first 3 decimals are identical.

The spelling of 2102619217 in words is "two billion, one hundred two million, six hundred nineteen thousand, two hundred seventeen".