21211300011 has 16 divisors (see below), whose sum is σ = 30903160320. Its totient is φ = 12834349920.

The previous prime is 21211300003. The next prime is 21211300039. The reversal of 21211300011 is 11000311212.

It is not a de Polignac number, because 21211300011 - 2³ = 21211300003 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21211300011.

It is not an unprimeable number, because it can be changed into a prime (21211300811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 504051 + ... + 544508.

It is an arithmetic number, because the mean of its divisors is an integer number (1931447520).

Almost surely, 2^21211300011 is an apocalyptic number.

21211300011 is a deficient number, since it is larger than the sum of its proper divisors (9691860309).

21211300011 is a wasteful number, since it uses less digits than its factorization.

21211300011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049186.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 21211300011 its reverse (11000311212), we get a palindrome (32211611223).

The spelling of 21211300011 in words is "twenty-one billion, two hundred eleven million, three hundred thousand, eleven".