12020000022011 has 4 divisors (see below), whose sum is σ = 12036005349024. Its totient is φ = 12003994695000.

The previous prime is 12020000021989. The next prime is 12020000022067. The reversal of 12020000022011 is 11022000002021.

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 12020000022011 - 2²⁶ = 12019932913147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12020000021983 and 12020000022001.

It is not an unprimeable number, because it can be changed into a prime (12020000022911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8002662380 + ... + 8002663881.

It is an arithmetic number, because the mean of its divisors is an integer number (3009001337256).

Almost surely, 2^{12020000022011} is an apocalyptic number.

12020000022011 is a deficient number, since it is larger than the sum of its proper divisors (16005327013).

12020000022011 is an equidigital number, since it uses as much as digits as its factorization.

12020000022011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16005327012.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12020000022011 its reverse (11022000002021), we get a palindrome (23042000024032).

The spelling of 12020000022011 in words is "twelve trillion, twenty billion, twenty-two thousand, eleven".