111220134542 has 8 divisors (see below), whose sum is σ = 181996583832. Its totient is φ = 50554606600.

The previous prime is 111220134541. The next prime is 111220134607. The reversal of 111220134542 is 245431022111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111220134541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2527730309 + ... + 2527730352.

It is an arithmetic number, because the mean of its divisors is an integer number (22749572979).

Almost surely, 2^111220134542 is an apocalyptic number.

111220134542 is a deficient number, since it is larger than the sum of its proper divisors (70776449290).

111220134542 is a wasteful number, since it uses less digits than its factorization.

111220134542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5055460674.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 111220134542 its reverse (245431022111), we get a palindrome (356651156653).

The spelling of 111220134542 in words is "one hundred eleven billion, two hundred twenty million, one hundred thirty-four thousand, five hundred forty-two".