20001211020002 has 16 divisors (see below), whose sum is σ = 32541425105112. Its totient is φ = 9182765460480.

The previous prime is 20001211020001. The next prime is 20001211020013. The reversal of 20001211020002 is 20002011210002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10840957938721 + 9160253081281 = 3292561^2 + 3026591^2 .

It is not an unprimeable number, because it can be changed into a prime (20001211020001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7174034123 + ... + 7174036910.

Almost surely, 2^{20001211020002} is an apocalyptic number.

20001211020002 is a deficient number, since it is larger than the sum of its proper divisors (12540214085110).

20001211020002 is a wasteful number, since it uses less digits than its factorization.

20001211020002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14348071093.

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

Adding to 20001211020002 its reverse (20002011210002), we get a palindrome (40003222230004).

The spelling of 20001211020002 in words is "twenty trillion, one billion, two hundred eleven million, twenty thousand, two".