20111112200221 has 48 divisors (see below), whose sum is σ = 25039685623680. Its totient is φ = 16048278005760.

The previous prime is 20111112200189. The next prime is 20111112200227. The reversal of 20111112200221 is 12200221111102.

It is not a de Polignac number, because 20111112200221 - 2⁵ = 20111112200189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20111112200195 and 20111112200204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111112200227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 75455890 + ... + 75721948.

It is an arithmetic number, because the mean of its divisors is an integer number (521660117160).

Almost surely, 2^{20111112200221} is an apocalyptic number.

It is an amenable number.

20111112200221 is a deficient number, since it is larger than the sum of its proper divisors (4928573423459).

20111112200221 is a wasteful number, since it uses less digits than its factorization.

20111112200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267074 (or 267067 counting only the distinct ones).

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

Adding to 20111112200221 its reverse (12200221111102), we get a palindrome (32311333311323).

The spelling of 20111112200221 in words is "twenty trillion, one hundred eleven billion, one hundred twelve million, two hundred thousand, two hundred twenty-one".