123444212100 has 216 divisors, whose sum is σ = 393790566624. Its totient is φ = 29834112000.

The previous prime is 123444212093. The next prime is 123444212137. The reversal of 123444212100 is 1212444321.

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 71 ways as a sum of consecutive naturals, for example, 12228055 + ... + 12238145.

Almost surely, 2^123444212100 is an apocalyptic number.

123444212100 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 123444212100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196895283312).

123444212100 is an abundant number, since it is smaller than the sum of its proper divisors (270346354524).

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

123444212100 is a wasteful number, since it uses less digits than its factorization.

123444212100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10467 (or 10449 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 123444212100 its reverse (1212444321), we get a palindrome (124656656421).

The spelling of 123444212100 in words is "one hundred twenty-three billion, four hundred forty-four million, two hundred twelve thousand, one hundred".