122745022500 has 120 divisors (see below), whose sum is σ = 359394456960. Its totient is φ = 32594576000.

The previous prime is 122745022493. The next prime is 122745022523. The reversal of 122745022500 is 5220547221.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1758262 + ... + 1826738.

It is an arithmetic number, because the mean of its divisors is an integer number (2994953808).

Almost surely, 2^122745022500 is an apocalyptic number.

122745022500 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 122745022500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179697228480).

122745022500 is an abundant number, since it is smaller than the sum of its proper divisors (236649434460).

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

122745022500 is a wasteful number, since it uses less digits than its factorization.

122745022500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68743 (or 68726 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 30.

Adding to 122745022500 its reverse (5220547221), we get a palindrome (127965569721).

The spelling of 122745022500 in words is "one hundred twenty-two billion, seven hundred forty-five million, twenty-two thousand, five hundred".