8212171280111 has 16 divisors (see below), whose sum is σ = 8397986688000. Its totient is φ = 8026820918688.

The previous prime is 8212171280107. The next prime is 8212171280167. The reversal of 8212171280111 is 1110821712128.

It is a cyclic number.

It is not a de Polignac number, because 8212171280111 - 2² = 8212171280107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8212171280191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 350950790 + ... + 350974188.

It is an arithmetic number, because the mean of its divisors is an integer number (524874168000).

Almost surely, 2^{8212171280111} is an apocalyptic number.

8212171280111 is a deficient number, since it is larger than the sum of its proper divisors (185815407889).

8212171280111 is a wasteful number, since it uses less digits than its factorization.

8212171280111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32998.

The product of its (nonzero) digits is 3584, while the sum is 35.

Adding to 8212171280111 its reverse (1110821712128), we get a palindrome (9322992992239).

The spelling of 8212171280111 in words is "eight trillion, two hundred twelve billion, one hundred seventy-one million, two hundred eighty thousand, one hundred eleven".