1112121311 has 16 divisors (see below), whose sum is σ = 1314447360. Its totient is φ = 920773440.

The previous prime is 1112121301. The next prime is 1112121337. The reversal of 1112121311 is 1131212111.

It is a cyclic number.

It is not a de Polignac number, because 1112121311 - 2¹⁸ = 1111859167 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 (1112121301) 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, 118970 + ... + 127976.

It is an arithmetic number, because the mean of its divisors is an integer number (82152960).

Almost surely, 2^1112121311 is an apocalyptic number.

1112121311 is a deficient number, since it is larger than the sum of its proper divisors (202326049).

1112121311 is an equidigital number, since it uses as much as digits as its factorization.

1112121311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9614.

The product of its digits is 12, while the sum is 14.

The square root of 1112121311 is about 33348.4828890311. The cubic root of 1112121311 is about 1036.0579661643.

Adding to 1112121311 its reverse (1131212111), we get a palindrome (2243333422).

The spelling of 1112121311 in words is "one billion, one hundred twelve million, one hundred twenty-one thousand, three hundred eleven".