21004203132230 has 32 divisors (see below), whose sum is σ = 37941465580704. Its totient is φ = 8371933065216.

The previous prime is 21004203132191. The next prime is 21004203132251. The reversal of 21004203132230 is 3223130240012.

It is a junction number, because it is equal to n+sod(n) for n = 21004203132196 and 21004203132205.

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 15 ways as a sum of consecutive naturals, for example, 22594694 + ... + 23505926.

It is an arithmetic number, because the mean of its divisors is an integer number (1185670799397).

Almost surely, 2^{21004203132230} is an apocalyptic number.

21004203132230 is a deficient number, since it is larger than the sum of its proper divisors (16937262448474).

21004203132230 is a wasteful number, since it uses less digits than its factorization.

21004203132230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919400.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21004203132230 its reverse (3223130240012), we get a palindrome (24227333372242).

The spelling of 21004203132230 in words is "twenty-one trillion, four billion, two hundred three million, one hundred thirty-two thousand, two hundred thirty".