111211042142 has 48 divisors (see below), whose sum is σ = 173510553600. Its totient is φ = 53434559376.

The previous prime is 111211042141. The next prime is 111211042157. The reversal of 111211042142 is 241240112111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111211042141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128865203 + ... + 128866065.

It is an arithmetic number, because the mean of its divisors is an integer number (3614803200).

Almost surely, 2^111211042142 is an apocalyptic number.

111211042142 is a deficient number, since it is larger than the sum of its proper divisors (62299511458).

111211042142 is an equidigital number, since it uses as much as digits as its factorization.

111211042142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277 (or 1194 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 111211042142 its reverse (241240112111), we get a palindrome (352451154253).

The spelling of 111211042142 in words is "one hundred eleven billion, two hundred eleven million, forty-two thousand, one hundred forty-two".