2231312021120 has 256 divisors, whose sum is σ = 6598566374400. Its totient is φ = 702585225216.

The previous prime is 2231312021093. The next prime is 2231312021177. The reversal of 2231312021120 is 211202131322.

It is a super-3 number, since 3×2231312021120³ (a number of 38 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2231312021092 and 2231312021101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11376041 + ... + 11570519.

It is an arithmetic number, because the mean of its divisors is an integer number (25775649900).

Almost surely, 2^{2231312021120} is an apocalyptic number.

2231312021120 is a gapful number since it is divisible by the number (20) 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 2231312021120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3299283187200).

2231312021120 is an abundant number, since it is smaller than the sum of its proper divisors (4367254353280).

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

2231312021120 is a wasteful number, since it uses less digits than its factorization.

2231312021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194715 (or 194703 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2231312021120 its reverse (211202131322), we get a palindrome (2442514152442).

The spelling of 2231312021120 in words is "two trillion, two hundred thirty-one billion, three hundred twelve million, twenty-one thousand, one hundred twenty".