200212111121 has 4 divisors (see below), whose sum is σ = 218413212144. Its totient is φ = 182011010100.

The previous prime is 200212111109. The next prime is 200212111163. The reversal of 200212111121 is 121111212002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 200212111121 - 2¹⁰ = 200212110097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200212111096 and 200212111105.

It is not an unprimeable number, because it can be changed into a prime (200212171121) 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, 9100550495 + ... + 9100550516.

It is an arithmetic number, because the mean of its divisors is an integer number (54603303036).

Almost surely, 2^200212111121 is an apocalyptic number.

It is an amenable number.

200212111121 is a deficient number, since it is larger than the sum of its proper divisors (18201101023).

200212111121 is a wasteful number, since it uses less digits than its factorization.

200212111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18201101022.

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

Adding to 200212111121 its reverse (121111212002), we get a palindrome (321323323123).

It can be divided in two parts, 2002 and 12111121, that multiplied together give a palindrome (24246464242).

The spelling of 200212111121 in words is "two hundred billion, two hundred twelve million, one hundred eleven thousand, one hundred twenty-one".