217126022419 has 2 divisors, whose sum is σ = 217126022420. Its totient is φ = 217126022418.

The previous prime is 217126022387. The next prime is 217126022447. The reversal of 217126022419 is 914220621712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 217126022419 - 2⁵ = 217126022387 is a prime.

It is a super-2 number, since 2×217126022419² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (217126022479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108563011209 + 108563011210.

It is an arithmetic number, because the mean of its divisors is an integer number (108563011210).

Almost surely, 2^217126022419 is an apocalyptic number.

217126022419 is a deficient number, since it is larger than the sum of its proper divisors (1).

217126022419 is an equidigital number, since it uses as much as digits as its factorization.

217126022419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 217126022419 in words is "two hundred seventeen billion, one hundred twenty-six million, twenty-two thousand, four hundred nineteen".