2148211133917 has 2 divisors, whose sum is σ = 2148211133918. Its totient is φ = 2148211133916.

The previous prime is 2148211133879. The next prime is 2148211133983. The reversal of 2148211133917 is 7193311128412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1702122059716 + 446089074201 = 1304654^2 + 667899^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2148211133917 is a prime.

It is a super-2 number, since 2×2148211133917² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2148211433917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074105566958 + 1074105566959.

It is an arithmetic number, because the mean of its divisors is an integer number (1074105566959).

Almost surely, 2^{2148211133917} is an apocalyptic number.

It is an amenable number.

2148211133917 is a deficient number, since it is larger than the sum of its proper divisors (1).

2148211133917 is an equidigital number, since it uses as much as digits as its factorization.

2148211133917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 43.

The spelling of 2148211133917 in words is "two trillion, one hundred forty-eight billion, two hundred eleven million, one hundred thirty-three thousand, nine hundred seventeen".