111000202020021 has 8 divisors (see below), whose sum is σ = 148817950406944. Its totient is φ = 73591294156560.

The previous prime is 111000202019981. The next prime is 111000202020047. The reversal of 111000202020021 is 120020202000111.

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

It is not a de Polignac number, because 111000202020021 - 2⁶ = 111000202019957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111000202019979 and 111000202020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111000202028021) 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, 102210130231 + ... + 102210131316.

It is an arithmetic number, because the mean of its divisors is an integer number (18602243800868).

Almost surely, 2^{111000202020021} is an apocalyptic number.

It is an amenable number.

111000202020021 is a deficient number, since it is larger than the sum of its proper divisors (37817748386923).

111000202020021 is a wasteful number, since it uses less digits than its factorization.

111000202020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204420261731.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 111000202020021 its reverse (120020202000111), we get a palindrome (231020404020132).

The spelling of 111000202020021 in words is "one hundred eleven trillion, two hundred two million, twenty thousand, twenty-one".