20121002012211 has 16 divisors (see below), whose sum is σ = 26894258012160. Its totient is φ = 13380909056640.

The previous prime is 20121002012191. The next prime is 20121002012231. The reversal of 20121002012211 is 11221020012102.

It is an interprime number because it is at equal distance from previous prime (20121002012191) and next prime (20121002012231).

It is not a de Polignac number, because 20121002012211 - 2²³ = 20120993623603 is a prime.

It is a super-2 number, since 2×20121002012211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20121002012231) 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, 2146195 + ... + 6696876.

It is an arithmetic number, because the mean of its divisors is an integer number (1680891125760).

Almost surely, 2^{20121002012211} is an apocalyptic number.

20121002012211 is a deficient number, since it is larger than the sum of its proper divisors (6773255999949).

20121002012211 is a wasteful number, since it uses less digits than its factorization.

20121002012211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8844946.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20121002012211 its reverse (11221020012102), we get a palindrome (31342022024313).

The spelling of 20121002012211 in words is "twenty trillion, one hundred twenty-one billion, two million, twelve thousand, two hundred eleven".