200021112111121 has 8 divisors (see below), whose sum is σ = 229325893942784. Its totient is φ = 170898914590560.

The previous prime is 200021112111109. The next prime is 200021112111133. The reversal of 200021112111121 is 121111211120002.

It is an interprime number because it is at equal distance from previous prime (200021112111109) and next prime (200021112111133).

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 200021112111121 - 2⁵ = 200021112111089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200021112111095 and 200021112111104.

It is not an unprimeable number, because it can be changed into a prime (200021112111421) 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, 45646075425 + ... + 45646079806.

It is an arithmetic number, because the mean of its divisors is an integer number (28665736742848).

Almost surely, 2^{200021112111121} is an apocalyptic number.

It is an amenable number.

200021112111121 is a deficient number, since it is larger than the sum of its proper divisors (29304781831663).

200021112111121 is an equidigital number, since it uses as much as digits as its factorization.

200021112111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91292155551.

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

Adding to 200021112111121 its reverse (121111211120002), we get a palindrome (321132323231123).

The spelling of 200021112111121 in words is "two hundred trillion, twenty-one billion, one hundred twelve million, one hundred eleven thousand, one hundred twenty-one".