20002001211 has 12 divisors (see below), whose sum is σ = 28909558392. Its totient is φ = 13326461856.

The previous prime is 20002001207. The next prime is 20002001213. The reversal of 20002001211 is 11210020002.

It is not a de Polignac number, because 20002001211 - 2² = 20002001207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20002001193 and 20002001202.

It is not an unprimeable number, because it can be changed into a prime (20002001213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 668346 + ... + 697631.

It is an arithmetic number, because the mean of its divisors is an integer number (2409129866).

Almost surely, 2^20002001211 is an apocalyptic number.

20002001211 is a deficient number, since it is larger than the sum of its proper divisors (8907557181).

20002001211 is a wasteful number, since it uses less digits than its factorization.

20002001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367610 (or 1367607 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20002001211 its reverse (11210020002), we get a palindrome (31212021213).

The spelling of 20002001211 in words is "twenty billion, two million, one thousand, two hundred eleven".