21123200222230 has 32 divisors (see below), whose sum is σ = 38039845060800. Its totient is φ = 8445261849600.

The previous prime is 21123200222209. The next prime is 21123200222237. The reversal of 21123200222230 is 3222200232112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21123200222237) by changing a digit.

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, 392240346 + ... + 392294194.

It is an arithmetic number, because the mean of its divisors is an integer number (1188745158150).

Almost surely, 2^{21123200222230} is an apocalyptic number.

21123200222230 is a deficient number, since it is larger than the sum of its proper divisors (16916644838570).

21123200222230 is a wasteful number, since it uses less digits than its factorization.

21123200222230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71784.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21123200222230 its reverse (3222200232112), we get a palindrome (24345400454342).

The spelling of 21123200222230 in words is "twenty-one trillion, one hundred twenty-three billion, two hundred million, two hundred twenty-two thousand, two hundred thirty".