111222211102021 has 8 divisors (see below), whose sum is σ = 112709237050880. Its totient is φ = 109737163899792.

The previous prime is 111222211102003. The next prime is 111222211102063. The reversal of 111222211102021 is 120201112222111.

It is a happy number.

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

It is not a de Polignac number, because 111222211102021 - 2⁷ = 111222211101893 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 111222211102021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222211102001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494573490 + ... + 494798323.

It is an arithmetic number, because the mean of its divisors is an integer number (14088654631360).

Almost surely, 2^{111222211102021} is an apocalyptic number.

It is an amenable number.

111222211102021 is a deficient number, since it is larger than the sum of its proper divisors (1487025948859).

111222211102021 is an equidigital number, since it uses as much as digits as its factorization.

111222211102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989373315.

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

Adding to 111222211102021 its reverse (120201112222111), we get a palindrome (231423323324132).

The spelling of 111222211102021 in words is "one hundred eleven trillion, two hundred twenty-two billion, two hundred eleven million, one hundred two thousand, twenty-one".