1121101312 has 80 divisors (see below), whose sum is σ = 2390284512. Its totient is φ = 523468800.

The previous prime is 1121101309. The next prime is 1121101357. The reversal of 1121101312 is 2131011211.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1121101292 and 1121101301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1313878 + ... + 1314730.

Almost surely, 2^1121101312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121101312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1195142256).

1121101312 is an abundant number, since it is smaller than the sum of its proper divisors (1269183200).

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

1121101312 is an equidigital number, since it uses as much as digits as its factorization.

1121101312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039 (or 1023 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1121101312 is about 33482.8510136159. The cubic root of 1121101312 is about 1038.8390991029.

Adding to 1121101312 its reverse (2131011211), we get a palindrome (3252112523).

The spelling of 1121101312 in words is "one billion, one hundred twenty-one million, one hundred one thousand, three hundred twelve".