123451011200 has 192 divisors, whose sum is σ = 333591505920. Its totient is φ = 44769177600.

The previous prime is 123451011107. The next prime is 123451011259. The reversal of 123451011200 is 2110154321.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13477022 + ... + 13486178.

It is an arithmetic number, because the mean of its divisors is an integer number (1737455760).

Almost surely, 2^123451011200 is an apocalyptic number.

123451011200 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 123451011200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166795752960).

123451011200 is an abundant number, since it is smaller than the sum of its proper divisors (210140494720).

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

123451011200 is a wasteful number, since it uses less digits than its factorization.

123451011200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9575 (or 9558 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 123451011200 its reverse (2110154321), we get a palindrome (125561165521).

The spelling of 123451011200 in words is "one hundred twenty-three billion, four hundred fifty-one million, eleven thousand, two hundred".