211301233123 has 2 divisors, whose sum is σ = 211301233124. Its totient is φ = 211301233122.

The previous prime is 211301233111. The next prime is 211301233153. The reversal of 211301233123 is 321332103112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211301233123 is a prime.

It is a super-2 number, since 2×211301233123² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211301233094 and 211301233103.

It is not a weakly prime, because it can be changed into another prime (211301233153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105650616561 + 105650616562.

It is an arithmetic number, because the mean of its divisors is an integer number (105650616562).

Almost surely, 2^211301233123 is an apocalyptic number.

211301233123 is a deficient number, since it is larger than the sum of its proper divisors (1).

211301233123 is an equidigital number, since it uses as much as digits as its factorization.

211301233123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 211301233123 its reverse (321332103112), we get a palindrome (532633336235).

The spelling of 211301233123 in words is "two hundred eleven billion, three hundred one million, two hundred thirty-three thousand, one hundred twenty-three".