123123311033220 has 48 divisors (see below), whose sum is σ = 383050300993920. Its totient is φ = 32832882942048.

The previous prime is 123123311033213. The next prime is 123123311033243. The reversal of 123123311033220 is 22330113321321.

123123311033220 is a `hidden beast` number, since 1 + 2 + 3 + 1 + 2 + 331 + 1 + 0 + 3 + 322 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114003065232 + ... + 114003066311.

It is an arithmetic number, because the mean of its divisors is an integer number (7980214604040).

Almost surely, 2^{123123311033220} is an apocalyptic number.

123123311033220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123123311033220 is an abundant number, since it is smaller than the sum of its proper divisors (259926989960700).

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

123123311033220 is a wasteful number, since it uses less digits than its factorization.

123123311033220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228006131561 (or 228006131553 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 123123311033220 its reverse (22330113321321), we get a palindrome (145453424354541).

The spelling of 123123311033220 in words is "one hundred twenty-three trillion, one hundred twenty-three billion, three hundred eleven million, thirty-three thousand, two hundred twenty".