111120220122021 has 32 divisors (see below), whose sum is σ = 179589645417600. Its totient is φ = 67345058874240.

The previous prime is 111120220122007. The next prime is 111120220122031. The reversal of 111120220122021 is 120221022021111.

111120220122021 is a `hidden beast` number, since 11 + 11 + 202 + 201 + 220 + 21 = 666.

It is not a de Polignac number, because 111120220122021 - 2⁷ = 111120220121893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111120220121985 and 111120220122003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111120220122031) 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 31 ways as a sum of consecutive naturals, for example, 38198095 + ... + 41004083.

It is an arithmetic number, because the mean of its divisors is an integer number (5612176419300).

Almost surely, 2^{111120220122021} is an apocalyptic number.

111120220122021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111120220122021 is a deficient number, since it is larger than the sum of its proper divisors (68469425295579).

111120220122021 is a wasteful number, since it uses less digits than its factorization.

111120220122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2939346 (or 2939340 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111120220122021 its reverse (120221022021111), we get a palindrome (231341242143132).

The spelling of 111120220122021 in words is "one hundred eleven trillion, one hundred twenty billion, two hundred twenty million, one hundred twenty-two thousand, twenty-one".