1111143123012 has 48 divisors (see below), whose sum is σ = 2792451576320. Its totient is φ = 341847537408.

The previous prime is 1111143122993. The next prime is 1111143123037. The reversal of 1111143123012 is 2103213411111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1111143123012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 821613 + ... + 1702155.

Almost surely, 2^{1111143123012} is an apocalyptic number.

1111143123012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1111143123012 is an abundant number, since it is smaller than the sum of its proper divisors (1681308453308).

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

1111143123012 is a wasteful number, since it uses less digits than its factorization.

1111143123012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888652 (or 888650 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 1111143123012 its reverse (2103213411111), we get a palindrome (3214356534123).

The spelling of 1111143123012 in words is "one trillion, one hundred eleven billion, one hundred forty-three million, one hundred twenty-three thousand, twelve".