220123231200 has 216 divisors, whose sum is σ = 787143900816. Its totient is φ = 57872640000.

The previous prime is 220123231169. The next prime is 220123231201. The reversal of 220123231200 is 2132321022.

220123231200 is a `hidden beast` number, since 2 + 201 + 232 + 31 + 200 = 666.

220123231200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×220123231200³ (a number of 35 digits) contains 333 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220123231201) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 295900 + ... + 726500.

It is an arithmetic number, because the mean of its divisors is an integer number (3644184726).

Almost surely, 2^220123231200 is an apocalyptic number.

220123231200 is a gapful number since it is divisible by the number (20) 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 220123231200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (393571950408).

220123231200 is an abundant number, since it is smaller than the sum of its proper divisors (567020669616).

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

220123231200 is a wasteful number, since it uses less digits than its factorization.

220123231200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430698 (or 430682 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 220123231200 its reverse (2132321022), we get a palindrome (222255552222).

The spelling of 220123231200 in words is "two hundred twenty billion, one hundred twenty-three million, two hundred thirty-one thousand, two hundred".