111361010420 has 96 divisors (see below), whose sum is σ = 265977613440. Its totient is φ = 38806709760.

The previous prime is 111361010413. The next prime is 111361010503. The reversal of 111361010420 is 24010163111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 111361010392 and 111361010401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 390326 + ... + 612434.

It is an arithmetic number, because the mean of its divisors is an integer number (2770600140).

Almost surely, 2^111361010420 is an apocalyptic number.

111361010420 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 111361010420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132988806720).

111361010420 is an abundant number, since it is smaller than the sum of its proper divisors (154616603020).

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

111361010420 is a wasteful number, since it uses less digits than its factorization.

111361010420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222225 (or 222223 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 111361010420 its reverse (24010163111), we get a palindrome (135371173531).

The spelling of 111361010420 in words is "one hundred eleven billion, three hundred sixty-one million, ten thousand, four hundred twenty".