200121102000002 has 4 divisors (see below), whose sum is σ = 300181653000006. Its totient is φ = 100060551000000.

The previous prime is 200121101999999. The next prime is 200121102000023. The reversal of 200121102000002 is 200000201121002.

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., 186335631531361 + 13785470468641 = 13650481^2 + 3712879^2 .

It is a super-3 number, since 3×200121102000002³ (a number of 44 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50030275499999 + ... + 50030275500002.

Almost surely, 2^{200121102000002} is an apocalyptic number.

200121102000002 is a deficient number, since it is larger than the sum of its proper divisors (100060551000004).

200121102000002 is a wasteful number, since it uses less digits than its factorization.

200121102000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100060551000003.

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

Adding to 200121102000002 its reverse (200000201121002), we get a palindrome (400121303121004).

The spelling of 200121102000002 in words is "two hundred trillion, one hundred twenty-one billion, one hundred two million, two", and thus it is an aban number.