201200111212111 has 4 divisors (see below), whose sum is σ = 219491030413224. Its totient is φ = 182909192011000.

The previous prime is 201200111212039. The next prime is 201200111212117. The reversal of 201200111212111 is 111212111002102.

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 201200111212111 - 2²¹ = 201200109114959 is a prime.

It is a super-3 number, since 3×201200111212111³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201200111212117) 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, 9145459600540 + ... + 9145459600561.

It is an arithmetic number, because the mean of its divisors is an integer number (54872757603306).

Almost surely, 2^{201200111212111} is an apocalyptic number.

201200111212111 is a deficient number, since it is larger than the sum of its proper divisors (18290919201113).

201200111212111 is a wasteful number, since it uses less digits than its factorization.

201200111212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18290919201112.

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

Adding to 201200111212111 its reverse (111212111002102), we get a palindrome (312412222214213).

The spelling of 201200111212111 in words is "two hundred one trillion, two hundred billion, one hundred eleven million, two hundred twelve thousand, one hundred eleven".