123121323330 has 32 divisors (see below), whose sum is σ = 297746843328. Its totient is φ = 32581723200.

The previous prime is 123121323323. The next prime is 123121323337. The reversal of 123121323330 is 33323121321.

It is an interprime number because it is at equal distance from previous prime (123121323323) and next prime (123121323337).

It is a self number, because there is not a number n which added to its sum of digits gives 123121323330.

It is not an unprimeable number, because it can be changed into a prime (123121323337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15660361 + ... + 15668220.

It is an arithmetic number, because the mean of its divisors is an integer number (9304588854).

Almost surely, 2^123121323330 is an apocalyptic number.

123121323330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123121323330 is an abundant number, since it is smaller than the sum of its proper divisors (174625519998).

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

123121323330 is a wasteful number, since it uses less digits than its factorization.

123121323330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31328722.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 123121323330 its reverse (33323121321), we get a palindrome (156444444651).

The spelling of 123121323330 in words is "one hundred twenty-three billion, one hundred twenty-one million, three hundred twenty-three thousand, three hundred thirty".