111131401420 has 48 divisors (see below), whose sum is σ = 266111945568. Its totient is φ = 38619417600.

The previous prime is 111131401351. The next prime is 111131401429. The reversal of 111131401420 is 24104131111.

It is not an unprimeable number, because it can be changed into a prime (111131401429) 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 15 ways as a sum of consecutive naturals, for example, 12567006 + ... + 12575845.

It is an arithmetic number, because the mean of its divisors is an integer number (5543998866).

Almost surely, 2^111131401420 is an apocalyptic number.

111131401420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111131401420 is an abundant number, since it is smaller than the sum of its proper divisors (154980544148).

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

111131401420 is a wasteful number, since it uses less digits than its factorization.

111131401420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25142890 (or 25142888 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 111131401420 its reverse (24104131111), we get a palindrome (135235532531).

The spelling of 111131401420 in words is "one hundred eleven billion, one hundred thirty-one million, four hundred one thousand, four hundred twenty".