1112121011 has 16 divisors (see below), whose sum is σ = 1187923968. Its totient is φ = 1037520000.

The previous prime is 1112120987. The next prime is 1112121071. The reversal of 1112121011 is 1101212111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1112121011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1112120983 and 1112121001.

It is not an unprimeable number, because it can be changed into a prime (1112121071) 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, 1121726 + ... + 1122716.

It is an arithmetic number, because the mean of its divisors is an integer number (74245248).

Almost surely, 2^1112121011 is an apocalyptic number.

1112121011 is a deficient number, since it is larger than the sum of its proper divisors (75802957).

1112121011 is a wasteful number, since it uses less digits than its factorization.

1112121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522.

The product of its (nonzero) digits is 4, while the sum is 11.

The square root of 1112121011 is about 33348.4783910751. The cubic root of 1112121011 is about 1036.0578730037.

Adding to 1112121011 its reverse (1101212111), we get a palindrome (2213333122).

The spelling of 1112121011 in words is "one billion, one hundred twelve million, one hundred twenty-one thousand, eleven".