200111112221 has 8 divisors (see below), whose sum is σ = 200415370680. Its totient is φ = 199807077888.

The previous prime is 200111112203. The next prime is 200111112263. The reversal of 200111112221 is 122211111002.

It can be written as a sum of positive squares in 4 ways, for example, as 400440121 + 199710672100 = 20011^2 + 446890^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200111112221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200111112196 and 200111112205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200111112281) 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, 1776245 + ... + 1885541.

It is an arithmetic number, because the mean of its divisors is an integer number (25051921335).

Almost surely, 2^200111112221 is an apocalyptic number.

It is an amenable number.

200111112221 is a deficient number, since it is larger than the sum of its proper divisors (304258459).

200111112221 is a wasteful number, since it uses less digits than its factorization.

200111112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112063.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 200111112221 its reverse (122211111002), we get a palindrome (322322223223).

The spelling of 200111112221 in words is "two hundred billion, one hundred eleven million, one hundred twelve thousand, two hundred twenty-one".