21210103012311 has 12 divisors (see below), whose sum is σ = 30639238083792. Its totient is φ = 14138950541856.

The previous prime is 21210103012247. The next prime is 21210103012339. The reversal of 21210103012311 is 11321030101212.

21210103012311 is a `hidden beast` number, since 2 + 121 + 0 + 10 + 301 + 231 + 1 = 666.

It is not a de Polignac number, because 21210103012311 - 2⁶ = 21210103012247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21210103012381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93057606 + ... + 93285251.

It is an arithmetic number, because the mean of its divisors is an integer number (2553269840316).

Almost surely, 2^{21210103012311} is an apocalyptic number.

21210103012311 is a deficient number, since it is larger than the sum of its proper divisors (9429135071481).

21210103012311 is a wasteful number, since it uses less digits than its factorization.

21210103012311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186355510 (or 186355507 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 21210103012311 its reverse (11321030101212), we get a palindrome (32531133113523).

The spelling of 21210103012311 in words is "twenty-one trillion, two hundred ten billion, one hundred three million, twelve thousand, three hundred eleven".