12221112202211 has 32 divisors (see below), whose sum is σ = 13792027963392. Its totient is φ = 10821915720000.

The previous prime is 12221112202177. The next prime is 12221112202217. The reversal of 12221112202211 is 11220221112221.

It is not a de Polignac number, because 12221112202211 - 2²² = 12221108007907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221112202217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34256846 + ... + 34611756.

It is an arithmetic number, because the mean of its divisors is an integer number (431000873856).

Almost surely, 2^{12221112202211} is an apocalyptic number.

12221112202211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12221112202211 is a deficient number, since it is larger than the sum of its proper divisors (1570915761181).

12221112202211 is an equidigital number, since it uses as much as digits as its factorization.

12221112202211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355616 (or 355594 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12221112202211 its reverse (11220221112221), we get a palindrome (23441333314432).

The spelling of 12221112202211 in words is "twelve trillion, two hundred twenty-one billion, one hundred twelve million, two hundred two thousand, two hundred eleven".