11111012112 has 40 divisors (see below), whose sum is σ = 28982135104. Its totient is φ = 3667711104.

The previous prime is 11111012093. The next prime is 11111012153. The reversal of 11111012112 is 21121011111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1118743 + ... + 1128630.

Almost surely, 2^11111012112 is an apocalyptic number.

11111012112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11111012112 is an abundant number, since it is smaller than the sum of its proper divisors (17871122992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11111012112 is a wasteful number, since it uses less digits than its factorization.

11111012112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2247487 (or 2247481 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11111012112 its reverse (21121011111), we get a palindrome (32232023223).

The spelling of 11111012112 in words is "eleven billion, one hundred eleven million, twelve thousand, one hundred twelve".