20101211211211 has 8 divisors (see below), whose sum is σ = 21669480070560. Its totient is φ = 18536088329472.

The previous prime is 20101211211203. The next prime is 20101211211229. The reversal of 20101211211211 is 11211211210102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20101211211211 - 2³ = 20101211211203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20101211211241) 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, 786481126 + ... + 786506683.

It is an arithmetic number, because the mean of its divisors is an integer number (2708685008820).

Almost surely, 2^{20101211211211} is an apocalyptic number.

20101211211211 is a deficient number, since it is larger than the sum of its proper divisors (1568268859349).

20101211211211 is a wasteful number, since it uses less digits than its factorization.

20101211211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572988805.

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

Adding to 20101211211211 its reverse (11211211210102), we get a palindrome (31312422421313).

The spelling of 20101211211211 in words is "twenty trillion, one hundred one billion, two hundred eleven million, two hundred eleven thousand, two hundred eleven".