213211131101123 has 2 divisors, whose sum is σ = 213211131101124. Its totient is φ = 213211131101122.

The previous prime is 213211131101039. The next prime is 213211131101167. The reversal of 213211131101123 is 321101131112312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213211131101123 - 2²⁸ = 213210862665667 is a prime.

It is a super-2 number, since 2×213211131101123² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (213211131107123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106605565550561 + 106605565550562.

It is an arithmetic number, because the mean of its divisors is an integer number (106605565550562).

Almost surely, 2^{213211131101123} is an apocalyptic number.

213211131101123 is a deficient number, since it is larger than the sum of its proper divisors (1).

213211131101123 is an equidigital number, since it uses as much as digits as its factorization.

213211131101123 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 23.

Adding to 213211131101123 its reverse (321101131112312), we get a palindrome (534312262213435).

The spelling of 213211131101123 in words is "two hundred thirteen trillion, two hundred eleven billion, one hundred thirty-one million, one hundred one thousand, one hundred twenty-three".