111020222110021 has 4 divisors (see below), whose sum is σ = 126880253840032. Its totient is φ = 95160190380012.

The previous prime is 111020222109971. The next prime is 111020222110097. The reversal of 111020222110021 is 120011222020111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111020222110021 - 2¹³ = 111020222101829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111020222109977 and 111020222110004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111020222110121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7930015864995 + ... + 7930015865008.

It is an arithmetic number, because the mean of its divisors is an integer number (31720063460008).

Almost surely, 2^{111020222110021} is an apocalyptic number.

It is an amenable number.

111020222110021 is a deficient number, since it is larger than the sum of its proper divisors (15860031730011).

111020222110021 is an equidigital number, since it uses as much as digits as its factorization.

111020222110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15860031730010.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111020222110021 its reverse (120011222020111), we get a palindrome (231031444130132).

The spelling of 111020222110021 in words is "one hundred eleven trillion, twenty billion, two hundred twenty-two million, one hundred ten thousand, twenty-one".