12021031123200 has 648 divisors, whose sum is σ = 47300174157600. Its totient is φ = 2888382873600.

The previous prime is 12021031123177. The next prime is 12021031123217. The reversal of 12021031123200 is 232113012021.

12021031123200 is a `hidden beast` number, since 1 + 20 + 2 + 10 + 311 + 2 + 320 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 71512851 + ... + 71680749.

Almost surely, 2^{12021031123200} is an apocalyptic number.

12021031123200 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 12021031123200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23650087078800).

12021031123200 is an abundant number, since it is smaller than the sum of its proper divisors (35279143034400).

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

12021031123200 is a wasteful number, since it uses less digits than its factorization.

12021031123200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168055 (or 168033 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12021031123200 its reverse (232113012021), we get a palindrome (12253144135221).

The spelling of 12021031123200 in words is "twelve trillion, twenty-one billion, thirty-one million, one hundred twenty-three thousand, two hundred".