12221022012011 has 4 divisors (see below), whose sum is σ = 12229962044112. Its totient is φ = 12212081979912.

The previous prime is 12221022011999. The next prime is 12221022012053. The reversal of 12221022012011 is 11021022012221.

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 12221022012011 - 2³⁴ = 12203842142827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221022012091) 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, 4470014000 + ... + 4470016733.

It is an arithmetic number, because the mean of its divisors is an integer number (3057490511028).

Almost surely, 2^{12221022012011} is an apocalyptic number.

12221022012011 is a deficient number, since it is larger than the sum of its proper divisors (8940032101).

12221022012011 is an equidigital number, since it uses as much as digits as its factorization.

12221022012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8940032100.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12221022012011 its reverse (11021022012221), we get a palindrome (23242044024232).

The spelling of 12221022012011 in words is "twelve trillion, two hundred twenty-one billion, twenty-two million, twelve thousand, eleven".