12220121001211 has 4 divisors (see below), whose sum is σ = 12288389833800. Its totient is φ = 12151852168624.

The previous prime is 12220121001197. The next prime is 12220121001259. The reversal of 12220121001211 is 11210012102221.

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 12220121001211 - 2²⁷ = 12219986783483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12220121001811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34134416026 + ... + 34134416383.

It is an arithmetic number, because the mean of its divisors is an integer number (3072097458450).

Almost surely, 2^{12220121001211} is an apocalyptic number.

12220121001211 is a deficient number, since it is larger than the sum of its proper divisors (68268832589).

12220121001211 is an equidigital number, since it uses as much as digits as its factorization.

12220121001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68268832588.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12220121001211 its reverse (11210012102221), we get a palindrome (23430133103432).

The spelling of 12220121001211 in words is "twelve trillion, two hundred twenty billion, one hundred twenty-one million, one thousand, two hundred eleven".