111420010020 has 192 divisors, whose sum is σ = 355221054720. Its totient is φ = 25854566400.

The previous prime is 111420009983. The next prime is 111420010027. The reversal of 111420010020 is 20010024111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 111420009978 and 111420010005.

It is not an unprimeable number, because it can be changed into a prime (111420010027) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1395336 + ... + 1473024.

It is an arithmetic number, because the mean of its divisors is an integer number (1850109660).

Almost surely, 2^111420010020 is an apocalyptic number.

111420010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111420010020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177610527360).

111420010020 is an abundant number, since it is smaller than the sum of its proper divisors (243801044700).

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

111420010020 is a wasteful number, since it uses less digits than its factorization.

111420010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77806 (or 77804 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 111420010020 its reverse (20010024111), we get a palindrome (131430034131).

The spelling of 111420010020 in words is "one hundred eleven billion, four hundred twenty million, ten thousand, twenty".