123000211123 has 2 divisors, whose sum is σ = 123000211124. Its totient is φ = 123000211122.

The previous prime is 123000211097. The next prime is 123000211183. The reversal of 123000211123 is 321112000321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123000211123 is a prime.

It is a super-2 number, since 2×123000211123² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123000211097 and 123000211106.

It is not a weakly prime, because it can be changed into another prime (123000211183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61500105561 + 61500105562.

It is an arithmetic number, because the mean of its divisors is an integer number (61500105562).

Almost surely, 2^123000211123 is an apocalyptic number.

123000211123 is a deficient number, since it is larger than the sum of its proper divisors (1).

123000211123 is an equidigital number, since it uses as much as digits as its factorization.

123000211123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 123000211123 its reverse (321112000321), we get a palindrome (444112211444).

The spelling of 123000211123 in words is "one hundred twenty-three billion, two hundred eleven thousand, one hundred twenty-three".