21130223311 has 2 divisors, whose sum is σ = 21130223312. Its totient is φ = 21130223310.

The previous prime is 21130223291. The next prime is 21130223353. The reversal of 21130223311 is 11332203112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21130223311 - 2²⁹ = 20593352399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21130223111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10565111655 + 10565111656.

It is an arithmetic number, because the mean of its divisors is an integer number (10565111656).

Almost surely, 2^21130223311 is an apocalyptic number.

21130223311 is a deficient number, since it is larger than the sum of its proper divisors (1).

21130223311 is an equidigital number, since it uses as much as digits as its factorization.

21130223311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21130223311 its reverse (11332203112), we get a palindrome (32462426423).

The spelling of 21130223311 in words is "twenty-one billion, one hundred thirty million, two hundred twenty-three thousand, three hundred eleven".