21014123004204 has 192 divisors, whose sum is σ = 54301694630400. Its totient is φ = 6272050176000.

The previous prime is 21014123004167. The next prime is 21014123004209. The reversal of 21014123004204 is 40240032141012.

It is not an unprimeable number, because it can be changed into a prime (21014123004209) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5089395612 + ... + 5089399740.

It is an arithmetic number, because the mean of its divisors is an integer number (282821326200).

Almost surely, 2^{21014123004204} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21014123004204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27150847315200).

21014123004204 is an abundant number, since it is smaller than the sum of its proper divisors (33287571626196).

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

21014123004204 is a wasteful number, since it uses less digits than its factorization.

21014123004204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6144 (or 6142 counting only the distinct ones).

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

Adding to 21014123004204 its reverse (40240032141012), we get a palindrome (61254155145216).

The spelling of 21014123004204 in words is "twenty-one trillion, fourteen billion, one hundred twenty-three million, four thousand, two hundred four".