2231021320100 has 72 divisors (see below), whose sum is σ = 4885762166208. Its totient is φ = 884236662400.

The previous prime is 2231021320093. The next prime is 2231021320123. The reversal of 2231021320100 is 10231201322.

It is a super-3 number, since 3×2231021320100³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8423897 + ... + 8684703.

It is an arithmetic number, because the mean of its divisors is an integer number (67857807864).

Almost surely, 2^{2231021320100} is an apocalyptic number.

2231021320100 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 2231021320100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2442881083104).

2231021320100 is an abundant number, since it is smaller than the sum of its proper divisors (2654740846108).

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

2231021320100 is a wasteful number, since it uses less digits than its factorization.

2231021320100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261605 (or 261598 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 2231021320100 its reverse (10231201322), we get a palindrome (2241252521422).

The spelling of 2231021320100 in words is "two trillion, two hundred thirty-one billion, twenty-one million, three hundred twenty thousand, one hundred".