2211222020111 has 16 divisors (see below), whose sum is σ = 2417443961184. Its totient is φ = 2010175985664.

The previous prime is 2211222020107. The next prime is 2211222020219. The reversal of 2211222020111 is 1110202221122.

It is a cyclic number.

It is not a de Polignac number, because 2211222020111 - 2² = 2211222020107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2211222020111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211222028111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3311615 + ... + 3922911.

It is an arithmetic number, because the mean of its divisors is an integer number (151090247574).

Almost surely, 2^{2211222020111} is an apocalyptic number.

2211222020111 is a deficient number, since it is larger than the sum of its proper divisors (206221941073).

2211222020111 is a wasteful number, since it uses less digits than its factorization.

2211222020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615530.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2211222020111 its reverse (1110202221122), we get a palindrome (3321424241233).

The spelling of 2211222020111 in words is "two trillion, two hundred eleven billion, two hundred twenty-two million, twenty thousand, one hundred eleven".