1222122212011 has 8 divisors (see below), whose sum is σ = 1294035765984. Its totient is φ = 1150211326080.

The previous prime is 1222122211993. The next prime is 1222122212041. The reversal of 1222122212011 is 1102122212221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222122212011 - 2⁵ = 1222122211979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222122212011.

It is not an unprimeable number, because it can be changed into a prime (1222122212041) 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 7 ways as a sum of consecutive naturals, for example, 317601 + ... + 1595341.

It is an arithmetic number, because the mean of its divisors is an integer number (161754470748).

Almost surely, 2^{1222122212011} is an apocalyptic number.

1222122212011 is a deficient number, since it is larger than the sum of its proper divisors (71913553973).

1222122212011 is a wasteful number, since it uses less digits than its factorization.

1222122212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334021.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1222122212011 its reverse (1102122212221), we get a palindrome (2324244424232).

The spelling of 1222122212011 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-two million, two hundred twelve thousand, eleven".