8212749122 has 6 divisors (see below), whose sum is σ = 12319315929. Its totient is φ = 4106310480.

The previous prime is 8212749119. The next prime is 8212749169. The reversal of 8212749122 is 2219472128.

It can be written as a sum of positive squares in 2 ways, for example, as 7986818161 + 225930961 = 89369^2 + 15031^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=64081.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 96122 + ... + 160202.

Almost surely, 2^8212749122 is an apocalyptic number.

8212749122 is a deficient number, since it is larger than the sum of its proper divisors (4106566807).

8212749122 is an frugal number, since it uses more digits than its factorization.

8212749122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128164 (or 64083 counting only the distinct ones).

The product of its digits is 32256, while the sum is 38.

The square root of 8212749122 is about 90624.2192904303. The cubic root of 8212749122 is about 2017.5742146686.

The spelling of 8212749122 in words is "eight billion, two hundred twelve million, seven hundred forty-nine thousand, one hundred twenty-two".