123001220112100 has 36 divisors (see below), whose sum is σ = 291177433795248. Its totient is φ = 44727716404000.

The previous prime is 123001220111977. The next prime is 123001220112119. The reversal of 123001220112100 is 1211022100321.

It is a super-3 number, since 3×123001220112100³ (a number of 43 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55909644406 + ... + 55909646605.

It is an arithmetic number, because the mean of its divisors is an integer number (8088262049868).

Almost surely, 2^{123001220112100} is an apocalyptic number.

123001220112100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123001220112100 is an abundant number, since it is smaller than the sum of its proper divisors (168176213683148).

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

123001220112100 is a wasteful number, since it uses less digits than its factorization.

123001220112100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111819291036 (or 111819291029 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 123001220112100 its reverse (1211022100321), we get a palindrome (124212242212421).

The spelling of 123001220112100 in words is "one hundred twenty-three trillion, one billion, two hundred twenty million, one hundred twelve thousand, one hundred".