21130331535211 has 2 divisors, whose sum is σ = 21130331535212. Its totient is φ = 21130331535210.

The previous prime is 21130331535091. The next prime is 21130331535217. The reversal of 21130331535211 is 11253513303112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21130331535211 - 2⁹ = 21130331534699 is a prime.

It is a super-2 number, since 2×21130331535211² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21130331535217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10565165767605 + 10565165767606.

It is an arithmetic number, because the mean of its divisors is an integer number (10565165767606).

Almost surely, 2^{21130331535211} is an apocalyptic number.

21130331535211 is a deficient number, since it is larger than the sum of its proper divisors (1).

21130331535211 is an equidigital number, since it uses as much as digits as its factorization.

21130331535211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8100, while the sum is 31.

Adding to 21130331535211 its reverse (11253513303112), we get a palindrome (32383844838323).

The spelling of 21130331535211 in words is "twenty-one trillion, one hundred thirty billion, three hundred thirty-one million, five hundred thirty-five thousand, two hundred eleven".