122212775808 has 128 divisors (see below), whose sum is σ = 366611133600. Its totient is φ = 40069693440.

The previous prime is 122212775791. The next prime is 122212775833. The reversal of 122212775808 is 808577212221.

122212775808 is a `hidden beast` number, since 1 + 22 + 21 + 27 + 7 + 580 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 79041 + ... + 500672.

Almost surely, 2^122212775808 is an apocalyptic number.

122212775808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122212775808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183305566800).

122212775808 is an abundant number, since it is smaller than the sum of its proper divisors (244398357792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122212775808 is an equidigital number, since it uses as much as digits as its factorization.

122212775808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579797 (or 579779 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 45.

The spelling of 122212775808 in words is "one hundred twenty-two billion, two hundred twelve million, seven hundred seventy-five thousand, eight hundred eight".