123051220022500 has 240 divisors, whose sum is σ = 341816815105920. Its totient is φ = 37629970560000.

The previous prime is 123051220022483. The next prime is 123051220022501. The reversal of 123051220022500 is 5220022150321.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (123051220022501) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4172056 + ... + 16232944.

It is an arithmetic number, because the mean of its divisors is an integer number (1424236729608).

Almost surely, 2^{123051220022500} is an apocalyptic number.

123051220022500 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 123051220022500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170908407552960).

123051220022500 is an abundant number, since it is smaller than the sum of its proper divisors (218765595083420).

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

123051220022500 is a wasteful number, since it uses less digits than its factorization.

123051220022500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12060984 (or 12060967 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 123051220022500 its reverse (5220022150321), we get a palindrome (128271242172821).

The spelling of 123051220022500 in words is "one hundred twenty-three trillion, fifty-one billion, two hundred twenty million, twenty-two thousand, five hundred".