200121221210 has 32 divisors (see below), whose sum is σ = 363412013184. Its totient is φ = 79340248000.

The previous prime is 200121221173. The next prime is 200121221239. The reversal of 200121221210 is 12122121002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 982475 + ... + 1168545.

It is an arithmetic number, because the mean of its divisors is an integer number (11356625412).

Almost surely, 2^200121221210 is an apocalyptic number.

200121221210 is a deficient number, since it is larger than the sum of its proper divisors (163290791974).

200121221210 is a wasteful number, since it uses less digits than its factorization.

200121221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187030.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 200121221210 its reverse (12122121002), we get a palindrome (212243342212).

The spelling of 200121221210 in words is "two hundred billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred ten".