111550144001 has 4 divisors (see below), whose sum is σ = 111551320404. Its totient is φ = 111548967600.

The previous prime is 111550143997. The next prime is 111550144031. The reversal of 111550144001 is 100441055111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100441055111 = 29 ⋅3463484659.

It can be written as a sum of positive squares in 2 ways, for example, as 101012094976 + 10538049025 = 317824^2 + 102655^2 .

It is a cyclic number.

It is not a de Polignac number, because 111550144001 - 2² = 111550143997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111550144031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 432170 + ... + 640211.

It is an arithmetic number, because the mean of its divisors is an integer number (27887830101).

Almost surely, 2^111550144001 is an apocalyptic number.

It is an amenable number.

111550144001 is a deficient number, since it is larger than the sum of its proper divisors (1176403).

111550144001 is a wasteful number, since it uses less digits than its factorization.

111550144001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176402.

The product of its (nonzero) digits is 400, while the sum is 23.

Adding to 111550144001 its reverse (100441055111), we get a palindrome (211991199112).

The spelling of 111550144001 in words is "one hundred eleven billion, five hundred fifty million, one hundred forty-four thousand, one".