20121100002211 has 16 divisors (see below), whose sum is σ = 22529866867200. Its totient is φ = 17841833831808.

The previous prime is 20121100002191. The next prime is 20121100002221. The reversal of 20121100002211 is 11220000112102.

It is a cyclic number.

It is not a de Polignac number, because 20121100002211 - 2¹⁹ = 20121099477923 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20121100002191 and 20121100002200.

It is not an unprimeable number, because it can be changed into a prime (20121100002221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135386691 + ... + 135535228.

It is an arithmetic number, because the mean of its divisors is an integer number (1408116679200).

Almost surely, 2^{20121100002211} is an apocalyptic number.

20121100002211 is a deficient number, since it is larger than the sum of its proper divisors (2408766864989).

20121100002211 is a wasteful number, since it uses less digits than its factorization.

20121100002211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270922158.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20121100002211 its reverse (11220000112102), we get a palindrome (31341100114313).

The spelling of 20121100002211 in words is "twenty trillion, one hundred twenty-one billion, one hundred million, two thousand, two hundred eleven".