17212898819 has 2 divisors, whose sum is σ = 17212898820. Its totient is φ = 17212898818.

The previous prime is 17212898777. The next prime is 17212898851. The reversal of 17212898819 is 91889821271.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17212898819 is a prime.

It is a super-2 number, since 2×17212898819² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (17212898719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8606449409 + 8606449410.

It is an arithmetic number, because the mean of its divisors is an integer number (8606449410).

Almost surely, 2^17212898819 is an apocalyptic number.

17212898819 is a deficient number, since it is larger than the sum of its proper divisors (1).

17212898819 is an equidigital number, since it uses as much as digits as its factorization.

17212898819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 56.

The spelling of 17212898819 in words is "seventeen billion, two hundred twelve million, eight hundred ninety-eight thousand, eight hundred nineteen".