111421344210 has 128 divisors (see below), whose sum is σ = 314225049600. Its totient is φ = 25003334400.

The previous prime is 111421344161. The next prime is 111421344217. The reversal of 111421344210 is 12443124111.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (111421344217) 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, 1485 + ... + 472064.

It is an arithmetic number, because the mean of its divisors is an integer number (2454883200).

Almost surely, 2^111421344210 is an apocalyptic number.

111421344210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 111421344210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157112524800).

111421344210 is an abundant number, since it is smaller than the sum of its proper divisors (202803705390).

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

111421344210 is a wasteful number, since it uses less digits than its factorization.

111421344210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473624.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 111421344210 its reverse (12443124111), we get a palindrome (123864468321).

The spelling of 111421344210 in words is "one hundred eleven billion, four hundred twenty-one million, three hundred forty-four thousand, two hundred ten".