111024145381 has 2 divisors, whose sum is σ = 111024145382. Its totient is φ = 111024145380.

The previous prime is 111024145321. The next prime is 111024145417. The reversal of 111024145381 is 183541420111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68954033281 + 42070112100 = 262591^2 + 205110^2 .

It is a cyclic number.

It is not a de Polignac number, because 111024145381 - 2²⁷ = 110889927653 is a prime.

It is a super-2 number, since 2×111024145381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111024145321) 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, 55512072690 + 55512072691.

It is an arithmetic number, because the mean of its divisors is an integer number (55512072691).

Almost surely, 2^111024145381 is an apocalyptic number.

It is an amenable number.

111024145381 is a deficient number, since it is larger than the sum of its proper divisors (1).

111024145381 is an equidigital number, since it uses as much as digits as its factorization.

111024145381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 31.

Adding to 111024145381 its reverse (183541420111), we get a palindrome (294565565492).

The spelling of 111024145381 in words is "one hundred eleven billion, twenty-four million, one hundred forty-five thousand, three hundred eighty-one".