21433126210 has 16 divisors (see below), whose sum is σ = 40849017336. Its totient is φ = 8068941568.

The previous prime is 21433126201. The next prime is 21433126213. The reversal of 21433126210 is 1262133412.

It can be written as a sum of positive squares in 4 ways, for example, as 21353684641 + 79441569 = 146129^2 + 8913^2 .

It is not an unprimeable number, because it can be changed into a prime (21433126213) 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 7 ways as a sum of consecutive naturals, for example, 63038437 + ... + 63038776.

Almost surely, 2^21433126210 is an apocalyptic number.

21433126210 is a deficient number, since it is larger than the sum of its proper divisors (19415891126).

21433126210 is a wasteful number, since it uses less digits than its factorization.

21433126210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126077237.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 21433126210 its reverse (1262133412), we get a palindrome (22695259622).

The spelling of 21433126210 in words is "twenty-one billion, four hundred thirty-three million, one hundred twenty-six thousand, two hundred ten".