122255103012500 has 144 divisors (see below), whose sum is σ = 268502840968320. Its totient is φ = 48703440240000.

The previous prime is 122255103012491. The next prime is 122255103012503. The reversal of 122255103012500 is 5210301552221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122255103012503) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9165230831 + ... + 9165244169.

It is an arithmetic number, because the mean of its divisors is an integer number (1864603062280).

Almost surely, 2^{122255103012500} is an apocalyptic number.

122255103012500 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 122255103012500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134251420484160).

122255103012500 is an abundant number, since it is smaller than the sum of its proper divisors (146247737955820).

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

122255103012500 is a wasteful number, since it uses less digits than its factorization.

122255103012500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16292 (or 16270 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 122255103012500 its reverse (5210301552221), we get a palindrome (127465404564721).

The spelling of 122255103012500 in words is "one hundred twenty-two trillion, two hundred fifty-five billion, one hundred three million, twelve thousand, five hundred".