111201200020021 has 8 divisors (see below), whose sum is σ = 111467389874400. Its totient is φ = 110935013943600.

The previous prime is 111201200019887. The next prime is 111201200020039. The reversal of 111201200020021 is 120020002102111.

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 111201200020021 - 2²⁷ = 111201065802293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111201200019983 and 111201200020010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111201200050021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63201046 + ... + 64936696.

It is an arithmetic number, because the mean of its divisors is an integer number (13933423734300).

Almost surely, 2^{111201200020021} is an apocalyptic number.

It is an amenable number.

111201200020021 is a deficient number, since it is larger than the sum of its proper divisors (266189854379).

111201200020021 is a wasteful number, since it uses less digits than its factorization.

111201200020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888979.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 111201200020021 its reverse (120020002102111), we get a palindrome (231221202122132).

The spelling of 111201200020021 in words is "one hundred eleven trillion, two hundred one billion, two hundred million, twenty thousand, twenty-one".