123123252252 has 384 divisors, whose sum is σ = 400374374400. Its totient is φ = 28406246400.

The previous prime is 123123252209. The next prime is 123123252257. The reversal of 123123252252 is 252252321321.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123123252257) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 198906399 + ... + 198907017.

It is an arithmetic number, because the mean of its divisors is an integer number (1042641600).

Almost surely, 2^123123252252 is an apocalyptic number.

123123252252 is a gapful number since it is divisible by the number (12) 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 123123252252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200187187200).

123123252252 is an abundant number, since it is smaller than the sum of its proper divisors (277251122148).

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

123123252252 is a wasteful number, since it uses less digits than its factorization.

123123252252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257 (or 1255 counting only the distinct ones).

The product of its digits is 14400, while the sum is 30.

Adding to 123123252252 its reverse (252252321321), we get a palindrome (375375573573).

The spelling of 123123252252 in words is "one hundred twenty-three billion, one hundred twenty-three million, two hundred fifty-two thousand, two hundred fifty-two".