1121311203112 has 32 divisors (see below), whose sum is σ = 2226317118120. Its totient is φ = 527632107520.

The previous prime is 1121311203041. The next prime is 1121311203113. The reversal of 1121311203112 is 2113021131211.

It can be written as a sum of positive squares in 4 ways, for example, as 1119165104836 + 2146098276 = 1057906^2 + 46326^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1121311203112.

It is not an unprimeable number, because it can be changed into a prime (1121311203113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1334538 + ... + 2005894.

Almost surely, 2^{1121311203112} is an apocalyptic number.

It is an amenable number.

1121311203112 is a deficient number, since it is larger than the sum of its proper divisors (1105005915008).

1121311203112 is a wasteful number, since it uses less digits than its factorization.

1121311203112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683661 (or 683657 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1121311203112 its reverse (2113021131211), we get a palindrome (3234332334323).

The spelling of 1121311203112 in words is "one trillion, one hundred twenty-one billion, three hundred eleven million, two hundred three thousand, one hundred twelve".