21210200011 has 32 divisors (see below), whose sum is σ = 28554882048. Its totient is φ = 15214919040.

The previous prime is 21210199999. The next prime is 21210200021. The reversal of 21210200011 is 11000201212.

It is a cyclic number.

It is not a de Polignac number, because 21210200011 - 2¹¹ = 21210197963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21210200021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 344970 + ... + 401776.

It is an arithmetic number, because the mean of its divisors is an integer number (892340064).

Almost surely, 2^21210200011 is an apocalyptic number.

21210200011 is a deficient number, since it is larger than the sum of its proper divisors (7344682037).

21210200011 is a wasteful number, since it uses less digits than its factorization.

21210200011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57211.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21210200011 its reverse (11000201212), we get a palindrome (32210401223).

The spelling of 21210200011 in words is "twenty-one billion, two hundred ten million, two hundred thousand, eleven".