1222022220111 has 96 divisors (see below), whose sum is σ = 2220181157376. Its totient is φ = 634446172800.

The previous prime is 1222022220077. The next prime is 1222022220197. The reversal of 1222022220111 is 1110222202221.

It is a happy number.

1222022220111 is a `hidden beast` number, since 12 + 220 + 222 + 201 + 11 = 666.

It is not a de Polignac number, because 1222022220111 - 2¹⁰ = 1222022219087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222022220011) 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 95 ways as a sum of consecutive naturals, for example, 199315516 + ... + 199321646.

It is an arithmetic number, because the mean of its divisors is an integer number (23126887056).

Almost surely, 2^{1222022220111} is an apocalyptic number.

1222022220111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1222022220111 is a deficient number, since it is larger than the sum of its proper divisors (998158937265).

1222022220111 is a wasteful number, since it uses less digits than its factorization.

1222022220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8554 (or 8529 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1222022220111 its reverse (1110222202221), we get a palindrome (2332244422332).

The spelling of 1222022220111 in words is "one trillion, two hundred twenty-two billion, twenty-two million, two hundred twenty thousand, one hundred eleven".