82211771109 has 16 divisors (see below), whose sum is σ = 120926885184. Its totient is φ = 49357910400.

The previous prime is 82211771101. The next prime is 82211771143. The reversal of 82211771109 is 90117711228.

It is not a de Polignac number, because 82211771109 - 2³ = 82211771101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82211771101) 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, 25705647 + ... + 25708844.

It is an arithmetic number, because the mean of its divisors is an integer number (7557930324).

Almost surely, 2^82211771109 is an apocalyptic number.

It is an amenable number.

82211771109 is a deficient number, since it is larger than the sum of its proper divisors (38715114075).

82211771109 is a wasteful number, since it uses less digits than its factorization.

82211771109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51414548.

The product of its (nonzero) digits is 14112, while the sum is 39.

The spelling of 82211771109 in words is "eighty-two billion, two hundred eleven million, seven hundred seventy-one thousand, one hundred nine".