122612505550 has 12 divisors (see below), whose sum is σ = 228059260416. Its totient is φ = 49045002200.

The previous prime is 122612505539. The next prime is 122612505563. The reversal of 122612505550 is 55505216221.

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 5 ways as a sum of consecutive naturals, for example, 1226125006 + ... + 1226125105.

It is an arithmetic number, because the mean of its divisors is an integer number (19004938368).

Almost surely, 2^122612505550 is an apocalyptic number.

122612505550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122612505550 is a deficient number, since it is larger than the sum of its proper divisors (105446754866).

122612505550 is a wasteful number, since it uses less digits than its factorization.

122612505550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2452250123 (or 2452250118 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 34.

The spelling of 122612505550 in words is "one hundred twenty-two billion, six hundred twelve million, five hundred five thousand, five hundred fifty".