211111227489 has 16 divisors (see below), whose sum is σ = 288368426304. Its totient is φ = 137297932800.

The previous prime is 211111227461. The next prime is 211111227491. The reversal of 211111227489 is 984722111112.

It is not a de Polignac number, because 211111227489 - 2¹⁹ = 211110703201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211111227409) 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 in 15 ways as a sum of consecutive naturals, for example, 1829737 + ... + 1941689.

It is an arithmetic number, because the mean of its divisors is an integer number (18023026644).

Almost surely, 2^211111227489 is an apocalyptic number.

It is an amenable number.

211111227489 is a deficient number, since it is larger than the sum of its proper divisors (77257198815).

211111227489 is a wasteful number, since it uses less digits than its factorization.

211111227489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127328.

The product of its digits is 16128, while the sum is 39.

The spelling of 211111227489 in words is "two hundred eleven billion, one hundred eleven million, two hundred twenty-seven thousand, four hundred eighty-nine".