200121220212010 has 16 divisors (see below), whose sum is σ = 364265591848200. Its totient is φ = 79149066870016.

The previous prime is 200121220211993. The next prime is 200121220212013. The reversal of 200121220212010 is 10212022121002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 57694491384721 + 142426728827289 = 7595689^2 + 11934267^2 .

It is not an unprimeable number, because it can be changed into a prime (200121220212013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112427650915 + ... + 112427652694.

Almost surely, 2^{200121220212010} is an apocalyptic number.

200121220212010 is a deficient number, since it is larger than the sum of its proper divisors (164144371636190).

200121220212010 is a wasteful number, since it uses less digits than its factorization.

200121220212010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224855303705.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 200121220212010 its reverse (10212022121002), we get a palindrome (210333242333012).

The spelling of 200121220212010 in words is "two hundred trillion, one hundred twenty-one billion, two hundred twenty million, two hundred twelve thousand, ten".