1112220312111 has 16 divisors (see below), whose sum is σ = 1647908776800. Its totient is φ = 741401466624.

The previous prime is 1112220312109. The next prime is 1112220312113. The reversal of 1112220312111 is 1112130222111.

It is a happy number.

1112220312111 is a `hidden beast` number, since 11 + 12 + 220 + 312 + 111 = 666.

It is an interprime number because it is at equal distance from previous prime (1112220312109) and next prime (1112220312113).

It is not a de Polignac number, because 1112220312111 - 2¹ = 1112220312109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112220312113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1927746 + ... + 2437343.

It is an arithmetic number, because the mean of its divisors is an integer number (102994298550).

Almost surely, 2^{1112220312111} is an apocalyptic number.

1112220312111 is a deficient number, since it is larger than the sum of its proper divisors (535688464689).

1112220312111 is an equidigital number, since it uses as much as digits as its factorization.

1112220312111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4374535 (or 4374529 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 1112220312111 its reverse (1112130222111), we get a palindrome (2224350534222).

The spelling of 1112220312111 in words is "one trillion, one hundred twelve billion, two hundred twenty million, three hundred twelve thousand, one hundred eleven".