20010211211001 has 32 divisors (see below), whose sum is σ = 30371790873600. Its totient is φ = 11599908091200.

The previous prime is 20010211210993. The next prime is 20010211211009. The reversal of 20010211211001 is 10011211201002.

It is an interprime number because it is at equal distance from previous prime (20010211210993) and next prime (20010211211009).

It is not a de Polignac number, because 20010211211001 - 2³ = 20010211210993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20010211211009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46853775 + ... + 47278923.

It is an arithmetic number, because the mean of its divisors is an integer number (949118464800).

Almost surely, 2^{20010211211001} is an apocalyptic number.

It is an amenable number.

20010211211001 is a deficient number, since it is larger than the sum of its proper divisors (10361579662599).

20010211211001 is a wasteful number, since it uses less digits than its factorization.

20010211211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487197.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20010211211001 its reverse (10011211201002), we get a palindrome (30021422412003).

Subtracting from 20010211211001 its reverse (10011211201002), we obtain a palindrome (9999000009999).

It can be divided in two parts, 200 and 10211211001, that added together give a palindrome (10211211201).

The spelling of 20010211211001 in words is "twenty trillion, ten billion, two hundred eleven million, two hundred eleven thousand, one".