200121211022002 has 4 divisors (see below), whose sum is σ = 300181816533006. Its totient is φ = 100060605511000.

The previous prime is 200121211021987. The next prime is 200121211022021. The reversal of 200121211022002 is 200220112121002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 113282836320481 + 86838374701521 = 10643441^2 + 9318711^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 50030302755499 + ... + 50030302755502.

Almost surely, 2^{200121211022002} is an apocalyptic number.

200121211022002 is a deficient number, since it is larger than the sum of its proper divisors (100060605511004).

200121211022002 is a wasteful number, since it uses less digits than its factorization.

200121211022002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100060605511003.

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

Adding to 200121211022002 its reverse (200220112121002), we get a palindrome (400341323143004).

The spelling of 200121211022002 in words is "two hundred trillion, one hundred twenty-one billion, two hundred eleven million, twenty-two thousand, two".