211211261116417 has 4 divisors (see below), whose sum is σ = 211220275320256. Its totient is φ = 211202246912580.

The previous prime is 211211261116397. The next prime is 211211261116433. The reversal of 211211261116417 is 714611162112112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211211261116417 - 2⁴⁷ = 70473772761089 is a prime.

It is a super-2 number, since 2×211211261116417² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211211261116487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4507066773 + ... + 4507113634.

It is an arithmetic number, because the mean of its divisors is an integer number (52805068830064).

Almost surely, 2^{211211261116417} is an apocalyptic number.

It is an amenable number.

211211261116417 is a deficient number, since it is larger than the sum of its proper divisors (9014203839).

211211261116417 is an equidigital number, since it uses as much as digits as its factorization.

211211261116417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9014203838.

The product of its digits is 8064, while the sum is 37.

The spelling of 211211261116417 in words is "two hundred eleven trillion, two hundred eleven billion, two hundred sixty-one million, one hundred sixteen thousand, four hundred seventeen".