111131420111 has 16 divisors (see below), whose sum is σ = 112175134848. Its totient is φ = 110094336000.

The previous prime is 111131420107. The next prime is 111131420119. The reversal of 111131420111 is 111024131111.

It is a cyclic number.

It is not a de Polignac number, because 111131420111 - 2² = 111131420107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111131420111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111131420119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38359415 + ... + 38362311.

It is an arithmetic number, because the mean of its divisors is an integer number (7010945928).

Almost surely, 2^111131420111 is an apocalyptic number.

111131420111 is a deficient number, since it is larger than the sum of its proper divisors (1043714737).

111131420111 is a wasteful number, since it uses less digits than its factorization.

111131420111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3922.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 111131420111 its reverse (111024131111), we get a palindrome (222155551222).

The spelling of 111131420111 in words is "one hundred eleven billion, one hundred thirty-one million, four hundred twenty thousand, one hundred eleven".