12222022111111 has 4 divisors (see below), whose sum is σ = 12520120211424. Its totient is φ = 11923924010800.

The previous prime is 12222022111067. The next prime is 12222022111139. The reversal of 12222022111111 is 11111122022221.

It is a happy number.

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 12222022111111 - 2³¹ = 12219874627463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222022115111) 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 3 ways as a sum of consecutive naturals, for example, 149049050095 + ... + 149049050176.

It is an arithmetic number, because the mean of its divisors is an integer number (3130030052856).

Almost surely, 2^{12222022111111} is an apocalyptic number.

12222022111111 is a deficient number, since it is larger than the sum of its proper divisors (298098100313).

12222022111111 is an equidigital number, since it uses as much as digits as its factorization.

12222022111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298098100312.

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

Adding to 12222022111111 its reverse (11111122022221), we get a palindrome (23333144133332).

The spelling of 12222022111111 in words is "twelve trillion, two hundred twenty-two billion, twenty-two million, one hundred eleven thousand, one hundred eleven".