200011221121111 has 4 divisors (see below), whose sum is σ = 201991530241224. Its totient is φ = 198030912001000.

The previous prime is 200011221121091. The next prime is 200011221121133. The reversal of 200011221121111 is 111121122110002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 200011221121111 - 2⁵ = 200011221121079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200011221721111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 990154559905 + ... + 990154560106.

It is an arithmetic number, because the mean of its divisors is an integer number (50497882560306).

Almost surely, 2^{200011221121111} is an apocalyptic number.

200011221121111 is a deficient number, since it is larger than the sum of its proper divisors (1980309120113).

200011221121111 is a wasteful number, since it uses less digits than its factorization.

200011221121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980309120112.

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

Adding to 200011221121111 its reverse (111121122110002), we get a palindrome (311132343231113).

The spelling of 200011221121111 in words is "two hundred trillion, eleven billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred eleven".