204123222000000 has 672 divisors, whose sum is σ = 741499032128400. Its totient is φ = 53893440000000.

The previous prime is 204123221999999. The next prime is 204123222000023. The reversal of 204123222000000 is 222321402.

204123222000000 is a `hidden beast` number, since 2 + 0 + 412 + 32 + 220 + 0 + 0 + 0 + 0 + 0 = 666.

It is a super-2 number, since 2×204123222000000² (a number of 29 digits) contains 22 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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 1817943861 + ... + 1818056139.

Almost surely, 2^{204123222000000} is an apocalyptic number.

204123222000000 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 204123222000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (370749516064200).

204123222000000 is an abundant number, since it is smaller than the sum of its proper divisors (537375810128400).

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

204123222000000 is an equidigital number, since it uses as much as digits as its factorization.

204123222000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112430 (or 112390 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 204123222000000 its reverse (222321402), we get a palindrome (204123444321402).

The spelling of 204123222000000 in words is "two hundred four trillion, one hundred twenty-three billion, two hundred twenty-two million", and thus it is an aban number.