200211100021111 has 4 divisors (see below), whose sum is σ = 200212551142912. Its totient is φ = 200209648899312.

The previous prime is 200211100021073. The next prime is 200211100021117. The reversal of 200211100021111 is 111120001112002.

It is a happy number.

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 200211100021111 - 2³¹ = 200208952537463 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200211100021091 and 200211100021100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200211100021117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 725353926 + ... + 725629891.

It is an arithmetic number, because the mean of its divisors is an integer number (50053137785728).

Almost surely, 2^{200211100021111} is an apocalyptic number.

200211100021111 is a deficient number, since it is larger than the sum of its proper divisors (1451121801).

200211100021111 is a wasteful number, since it uses less digits than its factorization.

200211100021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451121800.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 200211100021111 its reverse (111120001112002), we get a palindrome (311331101133113).

The spelling of 200211100021111 in words is "two hundred trillion, two hundred eleven billion, one hundred million, twenty-one thousand, one hundred eleven".