200122120121111 has 4 divisors (see below), whose sum is σ = 210654863285400. Its totient is φ = 189589376956824.

The previous prime is 200122120121087. The next prime is 200122120121123. The reversal of 200122120121111 is 111121021221002.

200122120121111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 200122120121111 - 2¹⁴ = 200122120104727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 200122120121111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200122120123111) 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, 5266371582116 + ... + 5266371582153.

It is an arithmetic number, because the mean of its divisors is an integer number (52663715821350).

Almost surely, 2^{200122120121111} is an apocalyptic number.

200122120121111 is a deficient number, since it is larger than the sum of its proper divisors (10532743164289).

200122120121111 is a wasteful number, since it uses less digits than its factorization.

200122120121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10532743164288.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 200122120121111 its reverse (111121021221002), we get a palindrome (311243141342113).

The spelling of 200122120121111 in words is "two hundred trillion, one hundred twenty-two billion, one hundred twenty million, one hundred twenty-one thousand, one hundred eleven".