1111123412 has 18 divisors (see below), whose sum is σ = 2261930202. Its totient is φ = 476195664.

The previous prime is 1111123379. The next prime is 1111123441. The reversal of 1111123412 is 2143211111.

It can be written as a sum of positive squares in only one way, i.e., 888397636 + 222725776 = 29806^2 + 14924^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2834303 + ... + 2834694.

It is an arithmetic number, because the mean of its divisors is an integer number (125662789).

Almost surely, 2^1111123412 is an apocalyptic number.

It is an amenable number.

1111123412 is an abundant number, since it is smaller than the sum of its proper divisors (1150806790).

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

1111123412 is a wasteful number, since it uses less digits than its factorization.

1111123412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5669015 (or 5669006 counting only the distinct ones).

The product of its digits is 48, while the sum is 17.

The square root of 1111123412 is about 33333.5178461560. The cubic root of 1111123412 is about 1035.7479908094.

Adding to 1111123412 its reverse (2143211111), we get a palindrome (3254334523).

The spelling of 1111123412 in words is "one billion, one hundred eleven million, one hundred twenty-three thousand, four hundred twelve".