123012111133 has 2 divisors, whose sum is σ = 123012111134. Its totient is φ = 123012111132.

The previous prime is 123012111109. The next prime is 123012111221. The reversal of 123012111133 is 331111210321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107545955364 + 15466155769 = 327942^2 + 124363^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123012111133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123012111133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123012411133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61506055566 + 61506055567.

It is an arithmetic number, because the mean of its divisors is an integer number (61506055567).

Almost surely, 2^123012111133 is an apocalyptic number.

It is an amenable number.

123012111133 is a deficient number, since it is larger than the sum of its proper divisors (1).

123012111133 is an equidigital number, since it uses as much as digits as its factorization.

123012111133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 123012111133 its reverse (331111210321), we get a palindrome (454123321454).

The spelling of 123012111133 in words is "one hundred twenty-three billion, twelve million, one hundred eleven thousand, one hundred thirty-three".