200121201002 has 8 divisors (see below), whose sum is σ = 300610023012. Its totient is φ = 99917860000.

The previous prime is 200121200987. The next prime is 200121201031. The reversal of 200121201002 is 200102121002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 200113970281 + 7230721 = 447341^2 + 2689^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71368499 + ... + 71371302.

Almost surely, 2^200121201002 is an apocalyptic number.

200121201002 is a deficient number, since it is larger than the sum of its proper divisors (100488822010).

200121201002 is a wasteful number, since it uses less digits than its factorization.

200121201002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142740504.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 200121201002 its reverse (200102121002), we get a palindrome (400223322004).

The spelling of 200121201002 in words is "two hundred billion, one hundred twenty-one million, two hundred one thousand, two".