213211131107123 has 2 divisors, whose sum is σ = 213211131107124. Its totient is φ = 213211131107122.

The previous prime is 213211131107101. The next prime is 213211131107147. The reversal of 213211131107123 is 321701131112312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213211131107123 - 2¹² = 213211131103027 is a prime.

It is not a weakly prime, because it can be changed into another prime (213211131101123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106605565553561 + 106605565553562.

It is an arithmetic number, because the mean of its divisors is an integer number (106605565553562).

Almost surely, 2^{213211131107123} is an apocalyptic number.

213211131107123 is a deficient number, since it is larger than the sum of its proper divisors (1).

213211131107123 is an equidigital number, since it uses as much as digits as its factorization.

213211131107123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 29.

Adding to 213211131107123 its reverse (321701131112312), we get a palindrome (534912262219435).

The spelling of 213211131107123 in words is "two hundred thirteen trillion, two hundred eleven billion, one hundred thirty-one million, one hundred seven thousand, one hundred twenty-three".