111142011 has 4 divisors (see below), whose sum is σ = 148189352. Its totient is φ = 74094672.

The previous prime is 111141977. The next prime is 111142013. The reversal of 111142011 is 110241111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110241111 = 3 ⋅36747037.

It is not a de Polignac number, because 111142011 - 2⁷ = 111141883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111142013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18523666 + ... + 18523671.

It is an arithmetic number, because the mean of its divisors is an integer number (37047338).

Almost surely, 2^111142011 is an apocalyptic number.

111142011 is a deficient number, since it is larger than the sum of its proper divisors (37047341).

111142011 is an equidigital number, since it uses as much as digits as its factorization.

111142011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37047340.

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 111142011 is about 10542.3911424306. The cubic root of 111142011 is about 480.7944179901.

Adding to 111142011 its reverse (110241111), we get a palindrome (221383122).

The spelling of 111142011 in words is "one hundred eleven million, one hundred forty-two thousand, eleven".