21234200206 has 8 divisors (see below), whose sum is σ = 32166660024. Its totient is φ = 10511980200.

The previous prime is 21234200201. The next prime is 21234200209. The reversal of 21234200206 is 60200243212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21234200201) 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 3 ways as a sum of consecutive naturals, for example, 52559700 + ... + 52560103.

It is an arithmetic number, because the mean of its divisors is an integer number (4020832503).

Almost surely, 2^21234200206 is an apocalyptic number.

21234200206 is a deficient number, since it is larger than the sum of its proper divisors (10932459818).

21234200206 is a wasteful number, since it uses less digits than its factorization.

21234200206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105119906.

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

Adding to 21234200206 its reverse (60200243212), we get a palindrome (81434443418).

The spelling of 21234200206 in words is "twenty-one billion, two hundred thirty-four million, two hundred thousand, two hundred six".