211054117215 has 16 divisors (see below), whose sum is σ = 344058033888. Its totient is φ = 110438380416.

The previous prime is 211054117201. The next prime is 211054117223. The reversal of 211054117215 is 512711450112.

211054117215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211054117215 - 2¹² = 211054113119 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132737644 + ... + 132739233.

It is an arithmetic number, because the mean of its divisors is an integer number (21503627118).

Almost surely, 2^211054117215 is an apocalyptic number.

211054117215 is a deficient number, since it is larger than the sum of its proper divisors (133003916673).

211054117215 is a wasteful number, since it uses less digits than its factorization.

211054117215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265476938.

The product of its (nonzero) digits is 2800, while the sum is 30.

Adding to 211054117215 its reverse (512711450112), we get a palindrome (723765567327).

The spelling of 211054117215 in words is "two hundred eleven billion, fifty-four million, one hundred seventeen thousand, two hundred fifteen".