111221122022120 has 64 divisors (see below), whose sum is σ = 273011529248640. Its totient is φ = 40441936262400.

The previous prime is 111221122022071. The next prime is 111221122022161. The reversal of 111221122022120 is 21220221122111.

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 = 111221122022092 and 111221122022101.

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, 1875485 + ... + 15031955.

It is an arithmetic number, because the mean of its divisors is an integer number (4265805144510).

Almost surely, 2^{111221122022120} is an apocalyptic number.

111221122022120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111221122022120 is an abundant number, since it is smaller than the sum of its proper divisors (161790407226520).

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

111221122022120 is a wasteful number, since it uses less digits than its factorization.

111221122022120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13175706 (or 13175702 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 111221122022120 its reverse (21220221122111), we get a palindrome (132441343144231).

Subtracting from 111221122022120 its reverse (21220221122111), we obtain a palindrome (90000900900009).

The spelling of 111221122022120 in words is "one hundred eleven trillion, two hundred twenty-one billion, one hundred twenty-two million, twenty-two thousand, one hundred twenty".