111442411143 has 32 divisors (see below), whose sum is σ = 188749440000. Its totient is φ = 63659819808.

The previous prime is 111442411139. The next prime is 111442411177. The reversal of 111442411143 is 341114244111.

It is not a de Polignac number, because 111442411143 - 2² = 111442411139 is a prime.

It is a super-2 number, since 2×111442411143² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111442411043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 468505 + ... + 665117.

It is an arithmetic number, because the mean of its divisors is an integer number (5898420000).

Almost surely, 2^111442411143 is an apocalyptic number.

111442411143 is a deficient number, since it is larger than the sum of its proper divisors (77307028857).

111442411143 is a wasteful number, since it uses less digits than its factorization.

111442411143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199628 (or 199622 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

Adding to 111442411143 its reverse (341114244111), we get a palindrome (452556655254).

The spelling of 111442411143 in words is "one hundred eleven billion, four hundred forty-two million, four hundred eleven thousand, one hundred forty-three".