111165120420 has 24 divisors (see below), whose sum is σ = 311262337344. Its totient is φ = 29644032096.

The previous prime is 111165120389. The next prime is 111165120421. The reversal of 111165120420 is 24021561111.

It is not an unprimeable number, because it can be changed into a prime (111165120421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 926375944 + ... + 926376063.

It is an arithmetic number, because the mean of its divisors is an integer number (12969264056).

Almost surely, 2^111165120420 is an apocalyptic number.

111165120420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111165120420 is an abundant number, since it is smaller than the sum of its proper divisors (200097216924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111165120420 is a wasteful number, since it uses less digits than its factorization.

111165120420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852752019 (or 1852752017 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

Adding to 111165120420 its reverse (24021561111), we get a palindrome (135186681531).

The spelling of 111165120420 in words is "one hundred eleven billion, one hundred sixty-five million, one hundred twenty thousand, four hundred twenty".