1012222111111 has 4 divisors (see below), whose sum is σ = 1022049510352. Its totient is φ = 1002394711872.

The previous prime is 1012222111099. The next prime is 1012222111127. The reversal of 1012222111111 is 1111112222101.

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 1012222111111 - 2¹⁷ = 1012221980039 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 (1012222111151) 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, 4913699466 + ... + 4913699671.

It is an arithmetic number, because the mean of its divisors is an integer number (255512377588).

Almost surely, 2^{1012222111111} is an apocalyptic number.

1012222111111 is a deficient number, since it is larger than the sum of its proper divisors (9827399241).

1012222111111 is an equidigital number, since it uses as much as digits as its factorization.

1012222111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9827399240.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 1012222111111 its reverse (1111112222101), we get a palindrome (2123334333212).

The spelling of 1012222111111 in words is "one trillion, twelve billion, two hundred twenty-two million, one hundred eleven thousand, one hundred eleven".