21400203404230 has 192 divisors, whose sum is σ = 45702712912896. Its totient is φ = 7062387321600.

The previous prime is 21400203404131. The next prime is 21400203404249. The reversal of 21400203404230 is 3240430200412.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21400203404195 and 21400203404204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 20756743815 + ... + 20756744845.

It is an arithmetic number, because the mean of its divisors is an integer number (238034963088).

Almost surely, 2^{21400203404230} is an apocalyptic number.

21400203404230 is an abundant number, since it is smaller than the sum of its proper divisors (24302509508666).

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

21400203404230 is a wasteful number, since it uses less digits than its factorization.

21400203404230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1811 (or 1680 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 21400203404230 its reverse (3240430200412), we get a palindrome (24640633604642).

The spelling of 21400203404230 in words is "twenty-one trillion, four hundred billion, two hundred three million, four hundred four thousand, two hundred thirty".