111520124413 has 2 divisors, whose sum is σ = 111520124414. Its totient is φ = 111520124412.

The previous prime is 111520124393. The next prime is 111520124473. The reversal of 111520124413 is 314421025111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73496294404 + 38023830009 = 271102^2 + 194997^2 .

It is an emirp because it is prime and its reverse (314421025111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111520124413 - 2⁹ = 111520123901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111520124473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55760062206 + 55760062207.

It is an arithmetic number, because the mean of its divisors is an integer number (55760062207).

Almost surely, 2^111520124413 is an apocalyptic number.

It is an amenable number.

111520124413 is a deficient number, since it is larger than the sum of its proper divisors (1).

111520124413 is an equidigital number, since it uses as much as digits as its factorization.

111520124413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 111520124413 its reverse (314421025111), we get a palindrome (425941149524).

The spelling of 111520124413 in words is "one hundred eleven billion, five hundred twenty million, one hundred twenty-four thousand, four hundred thirteen".