1012112222111 has 4 divisors (see below), whose sum is σ = 1012182293472. Its totient is φ = 1012042150752.

The previous prime is 1012112222087. The next prime is 1012112222117. The reversal of 1012112222111 is 1112222112101.

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 1012112222111 - 2⁶ = 1012112222047 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 1012112222111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012112222117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35014010 + ... + 35042903.

It is an arithmetic number, because the mean of its divisors is an integer number (253045573368).

Almost surely, 2^{1012112222111} is an apocalyptic number.

1012112222111 is a deficient number, since it is larger than the sum of its proper divisors (70071361).

1012112222111 is an equidigital number, since it uses as much as digits as its factorization.

1012112222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70071360.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1012112222111 its reverse (1112222112101), we get a palindrome (2124334334212).

The spelling of 1012112222111 in words is "one trillion, twelve billion, one hundred twelve million, two hundred twenty-two thousand, one hundred eleven".