200121220202210 has 16 divisors (see below), whose sum is σ = 360232716468600. Its totient is φ = 80045261390976.

The previous prime is 200121220202179. The next prime is 200121220202221. The reversal of 200121220202210 is 12202022121002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 159393427762321 + 40727792439889 = 12625111^2 + 6381833^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 403075745 + ... + 403571924.

Almost surely, 2^{200121220202210} is an apocalyptic number.

200121220202210 is a deficient number, since it is larger than the sum of its proper divisors (160111496266390).

200121220202210 is a wasteful number, since it uses less digits than its factorization.

200121220202210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806672485.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 200121220202210 its reverse (12202022121002), we get a palindrome (212323242323212).

The spelling of 200121220202210 in words is "two hundred trillion, one hundred twenty-one billion, two hundred twenty million, two hundred two thousand, two hundred ten".