122555257620 has 48 divisors (see below), whose sum is σ = 352429179648. Its totient is φ = 31798120320.

The previous prime is 122555257607. The next prime is 122555257637. The reversal of 122555257620 is 26752555221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27600316 + ... + 27604755.

It is an arithmetic number, because the mean of its divisors is an integer number (7342274576).

Almost surely, 2^122555257620 is an apocalyptic number.

122555257620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122555257620 is an abundant number, since it is smaller than the sum of its proper divisors (229873922028).

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

122555257620 is a wasteful number, since it uses less digits than its factorization.

122555257620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55205120 (or 55205118 counting only the distinct ones).

The product of its (nonzero) digits is 420000, while the sum is 42.

The spelling of 122555257620 in words is "one hundred twenty-two billion, five hundred fifty-five million, two hundred fifty-seven thousand, six hundred twenty".