123204100100 has 36 divisors (see below), whose sum is σ = 267397903668. Its totient is φ = 49273344000.

The previous prime is 123204100081. The next prime is 123204100121. The reversal of 123204100100 is 1001402321.

It can be written as a sum of positive squares in 6 ways, for example, as 26456974336 + 96747125764 = 162656^2 + 311042^2 .

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, 511460 + ... + 712740.

Almost surely, 2^123204100100 is an apocalyptic number.

123204100100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123204100100 is an abundant number, since it is smaller than the sum of its proper divisors (144193803568).

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

123204100100 is a wasteful number, since it uses less digits than its factorization.

123204100100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207416 (or 207409 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 123204100100 its reverse (1001402321), we get a palindrome (124205502421).

The spelling of 123204100100 in words is "one hundred twenty-three billion, two hundred four million, one hundred thousand, one hundred".