12021211100011 has 4 divisors (see below), whose sum is σ = 12021282020800. Its totient is φ = 12021140179224.

The previous prime is 12021211100009. The next prime is 12021211100081. The reversal of 12021211100011 is 11000111212021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12021211100011 - 2¹ = 12021211100009 is a prime.

It is a super-2 number, since 2×12021211100011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12021211099964 and 12021211100000.

It is not an unprimeable number, because it can be changed into a prime (12021211100081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35205531 + ... + 35545348.

It is an arithmetic number, because the mean of its divisors is an integer number (3005320505200).

Almost surely, 2^{12021211100011} is an apocalyptic number.

12021211100011 is a deficient number, since it is larger than the sum of its proper divisors (70920789).

12021211100011 is an equidigital number, since it uses as much as digits as its factorization.

12021211100011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70920788.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12021211100011 its reverse (11000111212021), we get a palindrome (23021322312032).

The spelling of 12021211100011 in words is "twelve trillion, twenty-one billion, two hundred eleven million, one hundred thousand, eleven".