123321301100 has 72 divisors (see below), whose sum is σ = 279889481760. Its totient is φ = 47074452480.

The previous prime is 123321301093. The next prime is 123321301121. The reversal of 123321301100 is 1103123321.

It is a super-2 number, since 2×123321301100² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 933986 + ... + 1057814.

Almost surely, 2^123321301100 is an apocalyptic number.

123321301100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123321301100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139944740880).

123321301100 is an abundant number, since it is smaller than the sum of its proper divisors (156568180660).

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

123321301100 is a wasteful number, since it uses less digits than its factorization.

123321301100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124299 (or 124292 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 123321301100 its reverse (1103123321), we get a palindrome (124424424421).

The spelling of 123321301100 in words is "one hundred twenty-three billion, three hundred twenty-one million, three hundred one thousand, one hundred".