22011222211111 has 16 divisors (see below), whose sum is σ = 25510240977408. Its totient is φ = 18600848330400.

The previous prime is 22011222211049. The next prime is 22011222211117. The reversal of 22011222211111 is 11111222211022.

It is a happy number.

It is not a de Polignac number, because 22011222211111 - 2⁹ = 22011222210599 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 (22011222211117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77730121 + ... + 78012781.

It is an arithmetic number, because the mean of its divisors is an integer number (1594390061088).

Almost surely, 2^{22011222211111} is an apocalyptic number.

22011222211111 is a deficient number, since it is larger than the sum of its proper divisors (3499018766297).

22011222211111 is a wasteful number, since it uses less digits than its factorization.

22011222211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439422.

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

Adding to 22011222211111 its reverse (11111222211022), we get a palindrome (33122444422133).

The spelling of 22011222211111 in words is "twenty-two trillion, eleven billion, two hundred twenty-two million, two hundred eleven thousand, one hundred eleven".