122555335320 has 768 divisors, whose sum is σ = 477555886080. Its totient is φ = 26945740800.

The previous prime is 122555335319. The next prime is 122555335337. The reversal of 122555335320 is 23533555221.

122555335320 is a `hidden beast` number, since 1 + 2 + 2 + 55 + 533 + 53 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 138167917 + ... + 138168803.

It is an arithmetic number, because the mean of its divisors is an integer number (621817560).

Almost surely, 2^122555335320 is an apocalyptic number.

122555335320 is a gapful number since it is divisible by the number (10) 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 122555335320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238777943040).

122555335320 is an abundant number, since it is smaller than the sum of its proper divisors (355000550760).

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

122555335320 is a wasteful number, since it uses less digits than its factorization.

122555335320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016 (or 1009 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 36.

The spelling of 122555335320 in words is "one hundred twenty-two billion, five hundred fifty-five million, three hundred thirty-five thousand, three hundred twenty".