20001002020211 has 4 divisors (see below), whose sum is σ = 20007523380312. Its totient is φ = 19994480660112.

The previous prime is 20001002020193. The next prime is 20001002020291. The reversal of 20001002020211 is 11202020010002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20001002020211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20001002020192 and 20001002020201.

It is not an unprimeable number, because it can be changed into a prime (20001002020291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3260675450 + ... + 3260681583.

It is an arithmetic number, because the mean of its divisors is an integer number (5001880845078).

Almost surely, 2^{20001002020211} is an apocalyptic number.

20001002020211 is a deficient number, since it is larger than the sum of its proper divisors (6521360101).

20001002020211 is an equidigital number, since it uses as much as digits as its factorization.

20001002020211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6521360100.

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

Adding to 20001002020211 its reverse (11202020010002), we get a palindrome (31203022030213).

The spelling of 20001002020211 in words is "twenty trillion, one billion, two million, twenty thousand, two hundred eleven".