111345123401 has 2 divisors, whose sum is σ = 111345123402. Its totient is φ = 111345123400.

The previous prime is 111345123389. The next prime is 111345123443. The reversal of 111345123401 is 104321543111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111025572025 + 319551376 = 333205^2 + 17876^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111345123401 is a prime.

It is not a weakly prime, because it can be changed into another prime (111345123481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55672561700 + 55672561701.

It is an arithmetic number, because the mean of its divisors is an integer number (55672561701).

Almost surely, 2^111345123401 is an apocalyptic number.

It is an amenable number.

111345123401 is a deficient number, since it is larger than the sum of its proper divisors (1).

111345123401 is an equidigital number, since it uses as much as digits as its factorization.

111345123401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

Adding to 111345123401 its reverse (104321543111), we get a palindrome (215666666512).

The spelling of 111345123401 in words is "one hundred eleven billion, three hundred forty-five million, one hundred twenty-three thousand, four hundred one".