111120620506 has 16 divisors (see below), whose sum is σ = 192240132480. Its totient is φ = 47186213040.

The previous prime is 111120620503. The next prime is 111120620519. The reversal of 111120620506 is 605026021111.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (111120620503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36407590 + ... + 36410641.

It is an arithmetic number, because the mean of its divisors is an integer number (12015008280).

Almost surely, 2^111120620506 is an apocalyptic number.

111120620506 is a deficient number, since it is larger than the sum of its proper divisors (81119511974).

111120620506 is a wasteful number, since it uses less digits than its factorization.

111120620506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72818349.

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 111120620506 its reverse (605026021111), we get a palindrome (716146641617).

The spelling of 111120620506 in words is "one hundred eleven billion, one hundred twenty million, six hundred twenty thousand, five hundred six".