1112121311320 has 64 divisors (see below), whose sum is σ = 2556746311680. Its totient is φ = 435173510016.

The previous prime is 1112121311281. The next prime is 1112121311359. The reversal of 1112121311320 is 231131212111.

It is an interprime number because it is at equal distance from previous prime (1112121311281) and next prime (1112121311359).

It is a super-2 number, since 2×1112121311320² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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, 3781837 + ... + 4065283.

It is an arithmetic number, because the mean of its divisors is an integer number (39949161120).

Almost surely, 2^{1112121311320} is an apocalyptic number.

1112121311320 is a gapful number since it is divisible by the number (10) 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 1112121311320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1278373155840).

1112121311320 is an abundant number, since it is smaller than the sum of its proper divisors (1444625000360).

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

1112121311320 is a wasteful number, since it uses less digits than its factorization.

1112121311320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285592 (or 285588 counting only the distinct ones).

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

Adding to 1112121311320 its reverse (231131212111), we get a palindrome (1343252523431).

The spelling of 1112121311320 in words is "one trillion, one hundred twelve billion, one hundred twenty-one million, three hundred eleven thousand, three hundred twenty".