123021311102030 has 144 divisors (see below), whose sum is σ = 256333936515552. Its totient is φ = 42397338297600.

The previous prime is 123021311102023. The next prime is 123021311102051. The reversal of 123021311102030 is 30201113120321.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 123021311101993 and 123021311102011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 330462200 + ... + 330834260.

It is an arithmetic number, because the mean of its divisors is an integer number (1780096781358).

Almost surely, 2^{123021311102030} is an apocalyptic number.

123021311102030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123021311102030 is an abundant number, since it is smaller than the sum of its proper divisors (133312625413522).

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

123021311102030 is a wasteful number, since it uses less digits than its factorization.

123021311102030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372331 (or 372211 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 123021311102030 its reverse (30201113120321), we get a palindrome (153222424222351).

The spelling of 123021311102030 in words is "one hundred twenty-three trillion, twenty-one billion, three hundred eleven million, one hundred two thousand, thirty".