213212211131 has 2 divisors, whose sum is σ = 213212211132. Its totient is φ = 213212211130.

The previous prime is 213212211127. The next prime is 213212211167. The reversal of 213212211131 is 131112212312.

213212211131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213212211131 - 2² = 213212211127 is a prime.

It is a super-3 number, since 3×213212211131³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (213212211181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106606105565 + 106606105566.

It is an arithmetic number, because the mean of its divisors is an integer number (106606105566).

Almost surely, 2^213212211131 is an apocalyptic number.

213212211131 is a deficient number, since it is larger than the sum of its proper divisors (1).

213212211131 is an equidigital number, since it uses as much as digits as its factorization.

213212211131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 20.

Adding to 213212211131 its reverse (131112212312), we get a palindrome (344324423443).

The spelling of 213212211131 in words is "two hundred thirteen billion, two hundred twelve million, two hundred eleven thousand, one hundred thirty-one".