123044111251111 has 2 divisors, whose sum is σ = 123044111251112. Its totient is φ = 123044111251110.

The previous prime is 123044111251069. The next prime is 123044111251129. The reversal of 123044111251111 is 111152111440321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123044111251111 - 2¹³ = 123044111242919 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123044111251111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123044111251181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61522055625555 + 61522055625556.

It is an arithmetic number, because the mean of its divisors is an integer number (61522055625556).

Almost surely, 2^{123044111251111} is an apocalyptic number.

123044111251111 is a deficient number, since it is larger than the sum of its proper divisors (1).

123044111251111 is an equidigital number, since it uses as much as digits as its factorization.

123044111251111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 28.

Adding to 123044111251111 its reverse (111152111440321), we get a palindrome (234196222691432).

The spelling of 123044111251111 in words is "one hundred twenty-three trillion, forty-four billion, one hundred eleven million, two hundred fifty-one thousand, one hundred eleven".