111221320211130 has 128 divisors (see below), whose sum is σ = 272734481590272. Its totient is φ = 29019705120000.

The previous prime is 111221320211129. The next prime is 111221320211189. The reversal of 111221320211130 is 31112023122111.

It is a junction number, because it is equal to n+sod(n) for n = 111221320211097 and 111221320211106.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 279243825 + ... + 279641835.

It is an arithmetic number, because the mean of its divisors is an integer number (2130738137424).

Almost surely, 2^{111221320211130} is an apocalyptic number.

111221320211130 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 111221320211130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136367240795136).

111221320211130 is an abundant number, since it is smaller than the sum of its proper divisors (161513161379142).

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

111221320211130 is a wasteful number, since it uses less digits than its factorization.

111221320211130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398884.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 111221320211130 its reverse (31112023122111), we get a palindrome (142333343333241).

The spelling of 111221320211130 in words is "one hundred eleven trillion, two hundred twenty-one billion, three hundred twenty million, two hundred eleven thousand, one hundred thirty".