111221210110120 has 64 divisors (see below), whose sum is σ = 276286642511040. Its totient is φ = 39956798361600.

The previous prime is 111221210110111. The next prime is 111221210110169. The reversal of 111221210110120 is 21011012122111.

It is a junction number, because it is equal to n+sod(n) for n = 111221210110094 and 111221210110103.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1522707321 + ... + 1522780360.

It is an arithmetic number, because the mean of its divisors is an integer number (4316978789235).

Almost surely, 2^{111221210110120} is an apocalyptic number.

111221210110120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111221210110120 is an abundant number, since it is smaller than the sum of its proper divisors (165065432400920).

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

111221210110120 is a wasteful number, since it uses less digits than its factorization.

111221210110120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3045487786 (or 3045487782 counting only the distinct ones).

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

Adding to 111221210110120 its reverse (21011012122111), we get a palindrome (132232222232231).

The spelling of 111221210110120 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred ten million, one hundred ten thousand, one hundred twenty".