111111012022120 has 64 divisors (see below), whose sum is σ = 273587367484800. Its totient is φ = 40276546894080.

The previous prime is 111111012022013. The next prime is 111111012022123. The reversal of 111111012022120 is 21220210111111.

It is a junction number, because it is equal to n+sod(n) for n = 111111012022094 and 111111012022103.

It is not an unprimeable number, because it can be changed into a prime (111111012022123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 398164980 + ... + 398443939.

It is an arithmetic number, because the mean of its divisors is an integer number (4274802616950).

Almost surely, 2^{111111012022120} is an apocalyptic number.

111111012022120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111111012022120 is an abundant number, since it is smaller than the sum of its proper divisors (162476355462680).

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

111111012022120 is a wasteful number, since it uses less digits than its factorization.

111111012022120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796609258 (or 796609254 counting only the distinct ones).

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

Adding to 111111012022120 its reverse (21220210111111), we get a palindrome (132331222133231).

The spelling of 111111012022120 in words is "one hundred eleven trillion, one hundred eleven billion, twelve million, twenty-two thousand, one hundred twenty".