20121000200002 has 8 divisors (see below), whose sum is σ = 32503154169276. Its totient is φ = 9286615476912.

The previous prime is 20121000199997. The next prime is 20121000200101. The reversal of 20121000200002 is 20000200012102.

It can be written as a sum of positive squares in 2 ways, for example, as 19708991549361 + 412008650641 = 4439481^2 + 641879^2 .

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, 386942311513 + ... + 386942311564.

Almost surely, 2^{20121000200002} is an apocalyptic number.

20121000200002 is a deficient number, since it is larger than the sum of its proper divisors (12382153969274).

20121000200002 is a wasteful number, since it uses less digits than its factorization.

20121000200002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773884623092.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20121000200002 its reverse (20000200012102), we get a palindrome (40121200212104).

The spelling of 20121000200002 in words is "twenty trillion, one hundred twenty-one billion, two hundred thousand, two".