2121112232320 has 64 divisors (see below), whose sum is σ = 5071565908800. Its totient is φ = 848314052608.

The previous prime is 2121112232269. The next prime is 2121112232339. The reversal of 2121112232320 is 232322111212.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-3 number, since 3×2121112232320³ (a number of 38 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2121112232291 and 2121112232300.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 3951897 + ... + 4456423.

It is an arithmetic number, because the mean of its divisors is an integer number (79243217325).

Almost surely, 2^{2121112232320} is an apocalyptic number.

2121112232320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121112232320 is an abundant number, since it is smaller than the sum of its proper divisors (2950453676480).

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

2121112232320 is an equidigital number, since it uses as much as digits as its factorization.

2121112232320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511115 (or 511103 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 2121112232320 its reverse (232322111212), we get a palindrome (2353434343532).

The spelling of 2121112232320 in words is "two trillion, one hundred twenty-one billion, one hundred twelve million, two hundred thirty-two thousand, three hundred twenty".