200121002 has 4 divisors (see below), whose sum is σ = 300181506. Its totient is φ = 100060500.

The previous prime is 200121001. The next prime is 200121007.

200121002 is nontrivially palindromic in base 10.

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., 139452481 + 60668521 = 11809^2 + 7789^2 .

It is not an unprimeable number, because it can be changed into a prime (200121001) 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 as a sum of consecutive naturals, namely, 50030249 + ... + 50030252.

Almost surely, 2^200121002 is an apocalyptic number.

200121002 is a deficient number, since it is larger than the sum of its proper divisors (100060504).

200121002 is a wasteful number, since it uses less digits than its factorization.

200121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100060503.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 200121002 is about 14146.4130435952. The cubic root of 200121002 is about 584.9214611976.

The spelling of 200121002 in words is "two hundred million, one hundred twenty-one thousand, two".