57212105611 has 4 divisors (see below), whose sum is σ = 57246634792. Its totient is φ = 57177576432.

The previous prime is 57212105597. The next prime is 57212105647. The reversal of 57212105611 is 11650121275.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57212105611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57212175611) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 17262105 + ... + 17265418.

It is an arithmetic number, because the mean of its divisors is an integer number (14311658698).

Almost surely, 2^57212105611 is an apocalyptic number.

57212105611 is a deficient number, since it is larger than the sum of its proper divisors (34529181).

57212105611 is a wasteful number, since it uses less digits than its factorization.

57212105611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34529180.

The product of its (nonzero) digits is 4200, while the sum is 31.

Adding to 57212105611 its reverse (11650121275), we get a palindrome (68862226886).

The spelling of 57212105611 in words is "fifty-seven billion, two hundred twelve million, one hundred five thousand, six hundred eleven".