200121221112 has 64 divisors (see below), whose sum is σ = 557613331200. Its totient is φ = 59478750720.

The previous prime is 200121221107. The next prime is 200121221119. The reversal of 200121221112 is 211122121002.

It is a junction number, because it is equal to n+sod(n) for n = 200121221091 and 200121221100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200121221119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12899964 + ... + 12915467.

It is an arithmetic number, because the mean of its divisors is an integer number (8712708300).

Almost surely, 2^200121221112 is an apocalyptic number.

It is an amenable number.

200121221112 is an abundant number, since it is smaller than the sum of its proper divisors (357492110088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

200121221112 is a wasteful number, since it uses less digits than its factorization.

200121221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25815476 (or 25815472 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 200121221112 its reverse (211122121002), we get a palindrome (411243342114).

The spelling of 200121221112 in words is "two hundred billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred twelve".