211239054057 has 32 divisors (see below), whose sum is σ = 286109824000. Its totient is φ = 138615909120.

The previous prime is 211239054049. The next prime is 211239054097. The reversal of 211239054057 is 750450932112.

211239054057 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 211239054057 - 2³ = 211239054049 is a prime.

It is the 459608-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211239054007) by changing a digit.

It is a nontrivial repunit in base 459607.

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 31 ways as a sum of consecutive naturals, for example, 104108919 + ... + 104110947.

It is an arithmetic number, because the mean of its divisors is an integer number (8940932000).

Almost surely, 2^211239054057 is an apocalyptic number.

It is an amenable number.

211239054057 is a deficient number, since it is larger than the sum of its proper divisors (74870769943).

211239054057 is a wasteful number, since it uses less digits than its factorization.

211239054057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4081.

The product of its (nonzero) digits is 75600, while the sum is 39.

Adding to 211239054057 its reverse (750450932112), we get a palindrome (961689986169).

The spelling of 211239054057 in words is "two hundred eleven billion, two hundred thirty-nine million, fifty-four thousand, fifty-seven".