21013132211 has 2 divisors, whose sum is σ = 21013132212. Its totient is φ = 21013132210.

The previous prime is 21013132187. The next prime is 21013132223. The reversal of 21013132211 is 11223131012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21013132211 - 2²² = 21008937907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21013132211.

It is not a weakly prime, because it can be changed into another prime (21013135211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10506566105 + 10506566106.

It is an arithmetic number, because the mean of its divisors is an integer number (10506566106).

Almost surely, 2^21013132211 is an apocalyptic number.

21013132211 is a deficient number, since it is larger than the sum of its proper divisors (1).

21013132211 is an equidigital number, since it uses as much as digits as its factorization.

21013132211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21013132211 its reverse (11223131012), we get a palindrome (32236263223).

The spelling of 21013132211 in words is "twenty-one billion, thirteen million, one hundred thirty-two thousand, two hundred eleven".