111122120122021 has 8 divisors (see below), whose sum is σ = 113285014165088. Its totient is φ = 108970233174000.

The previous prime is 111122120121949. The next prime is 111122120122031. The reversal of 111122120122021 is 120221021221111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111122120122021 - 2¹¹ = 111122120119973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111122120122021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111122120122031) 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 7 ways as a sum of consecutive naturals, for example, 2751753375 + ... + 2751793756.

It is an arithmetic number, because the mean of its divisors is an integer number (14160626770636).

Almost surely, 2^{111122120122021} is an apocalyptic number.

It is an amenable number.

111122120122021 is a deficient number, since it is larger than the sum of its proper divisors (2162894043067).

111122120122021 is an equidigital number, since it uses as much as digits as its factorization.

111122120122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5503547523.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111122120122021 its reverse (120221021221111), we get a palindrome (231343141343132).

The spelling of 111122120122021 in words is "one hundred eleven trillion, one hundred twenty-two billion, one hundred twenty million, one hundred twenty-two thousand, twenty-one".