12221112021211 has 8 divisors (see below), whose sum is σ = 13056333346880. Its totient is φ = 11405091185928.

The previous prime is 12221112021203. The next prime is 12221112021233. The reversal of 12221112021211 is 11212021112221.

It is a happy number.

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 12221112021211 - 2³ = 12221112021203 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221112027211) 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 7 ways as a sum of consecutive naturals, for example, 4800121281 + ... + 4800123826.

It is an arithmetic number, because the mean of its divisors is an integer number (1632041668360).

Almost surely, 2^{12221112021211} is an apocalyptic number.

12221112021211 is a deficient number, since it is larger than the sum of its proper divisors (835221325669).

12221112021211 is an equidigital number, since it uses as much as digits as its factorization.

12221112021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9600245193.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12221112021211 its reverse (11212021112221), we get a palindrome (23433133133432).

The spelling of 12221112021211 in words is "twelve trillion, two hundred twenty-one billion, one hundred twelve million, twenty-one thousand, two hundred eleven".