12211066011221 has 8 divisors (see below), whose sum is σ = 15224186195904. Its totient is φ = 9515116372320.

The previous prime is 12211066011217. The next prime is 12211066011289.

It is a happy number.

12211066011221 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12211066011221 - 2² = 12211066011217 is a prime.

It is a super-2 number, since 2×12211066011221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211066011421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79292636360 + ... + 79292636513.

It is an arithmetic number, because the mean of its divisors is an integer number (1903023274488).

Almost surely, 2^{12211066011221} is an apocalyptic number.

12211066011221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12211066011221 is a deficient number, since it is larger than the sum of its proper divisors (3013120184683).

12211066011221 is a wasteful number, since it uses less digits than its factorization.

12211066011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158585272891.

The product of its (nonzero) digits is 576, while the sum is 26.

It can be divided in two parts, 1221106 and 6011221, that added together give a palindrome (7232327).

The spelling of 12211066011221 in words is "twelve trillion, two hundred eleven billion, sixty-six million, eleven thousand, two hundred twenty-one".