200121021222 has 32 divisors (see below), whose sum is σ = 400745608704. Its totient is φ = 66623138400.

The previous prime is 200121021211. The next prime is 200121021229. The reversal of 200121021222 is 222120121002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200121021229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17686947 + ... + 17698257.

It is an arithmetic number, because the mean of its divisors is an integer number (12523300272).

Almost surely, 2^200121021222 is an apocalyptic number.

200121021222 is an abundant number, since it is smaller than the sum of its proper divisors (200624587482).

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

200121021222 is a wasteful number, since it uses less digits than its factorization.

200121021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14764.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 200121021222 its reverse (222120121002), we get a palindrome (422241142224).

The spelling of 200121021222 in words is "two hundred billion, one hundred twenty-one million, twenty-one thousand, two hundred twenty-two".