12211221022201 has 8 divisors (see below), whose sum is σ = 12929561806824. Its totient is φ = 11492883978240.

The previous prime is 12211221022199. The next prime is 12211221022241. The reversal of 12211221022201 is 10222012211221.

It can be written as a sum of positive squares in 4 ways, for example, as 21703182400 + 12189517839801 = 147320^2 + 3491349^2 .

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

It is not a de Polignac number, because 12211221022201 - 2¹ = 12211221022199 is a prime.

It is a super-2 number, since 2×12211221022201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12211221022241) 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, 8513461 + ... + 9843853.

It is an arithmetic number, because the mean of its divisors is an integer number (1616195225853).

Almost surely, 2^{12211221022201} is an apocalyptic number.

It is an amenable number.

12211221022201 is a deficient number, since it is larger than the sum of its proper divisors (718340784623).

12211221022201 is a wasteful number, since it uses less digits than its factorization.

12211221022201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1870331.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12211221022201 its reverse (10222012211221), we get a palindrome (22433233233422).

The spelling of 12211221022201 in words is "twelve trillion, two hundred eleven billion, two hundred twenty-one million, twenty-two thousand, two hundred one".