1121300442312 has 64 divisors (see below), whose sum is σ = 2927585220480. Its totient is φ = 357216195072.

The previous prime is 1121300442271. The next prime is 1121300442319. The reversal of 1121300442312 is 2132440031211.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1121300442319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192823 + ... + 1509894.

It is an arithmetic number, because the mean of its divisors is an integer number (45743519070).

Almost surely, 2^{1121300442312} is an apocalyptic number.

1121300442312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121300442312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1463792610240).

1121300442312 is an abundant number, since it is smaller than the sum of its proper divisors (1806284778168).

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

1121300442312 is a wasteful number, since it uses less digits than its factorization.

1121300442312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703942 (or 1703938 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 1121300442312 its reverse (2132440031211), we get a palindrome (3253740473523).

The spelling of 1121300442312 in words is "one trillion, one hundred twenty-one billion, three hundred million, four hundred forty-two thousand, three hundred twelve".