111125213542 has 16 divisors (see below), whose sum is σ = 195146717472. Its totient is φ = 46463503680.

The previous prime is 111125213533. The next prime is 111125213557. The reversal of 111125213542 is 245312521111.

It is a self number, because there is not a number n which added to its sum of digits gives 111125213542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96798393 + ... + 96799540.

It is an arithmetic number, because the mean of its divisors is an integer number (12196669842).

Almost surely, 2^111125213542 is an apocalyptic number.

111125213542 is a deficient number, since it is larger than the sum of its proper divisors (84021503930).

111125213542 is a wasteful number, since it uses less digits than its factorization.

111125213542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193597983.

The product of its digits is 2400, while the sum is 28.

Adding to 111125213542 its reverse (245312521111), we get a palindrome (356437734653).

The spelling of 111125213542 in words is "one hundred eleven billion, one hundred twenty-five million, two hundred thirteen thousand, five hundred forty-two".