2221321231000 has 32 divisors (see below), whose sum is σ = 5197891682880. Its totient is φ = 888528492000.

The previous prime is 2221321230913. The next prime is 2221321231001. The reversal of 2221321231000 is 1321231222.

It is a super-2 number, since 2×2221321231000² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221321231001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1110659616 + ... + 1110661615.

It is an arithmetic number, because the mean of its divisors is an integer number (162434115090).

Almost surely, 2^{2221321231000} is an apocalyptic number.

2221321231000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221321231000 is an abundant number, since it is smaller than the sum of its proper divisors (2976570451880).

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

2221321231000 is a wasteful number, since it uses less digits than its factorization.

2221321231000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221321252 (or 2221321238 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 2221321231000 its reverse (1321231222), we get a palindrome (2222642462222).

The spelling of 2221321231000 in words is "two trillion, two hundred twenty-one billion, three hundred twenty-one million, two hundred thirty-one thousand".