2221531034244 has 72 divisors (see below), whose sum is σ = 5509383804288. Its totient is φ = 696576376320.

The previous prime is 2221531034231. The next prime is 2221531034249. The reversal of 2221531034244 is 4424301351222.

It is a happy number.

It is a super-2 number, since 2×2221531034244² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2221531034249) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 6317442 + ... + 6659814.

It is an arithmetic number, because the mean of its divisors is an integer number (76519219504).

Almost surely, 2^{2221531034244} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221531034244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2754691902144).

2221531034244 is an abundant number, since it is smaller than the sum of its proper divisors (3287852770044).

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

2221531034244 is a wasteful number, since it uses less digits than its factorization.

2221531034244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344285 (or 344266 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 2221531034244 its reverse (4424301351222), we get a palindrome (6645832385466).

The spelling of 2221531034244 in words is "two trillion, two hundred twenty-one billion, five hundred thirty-one million, thirty-four thousand, two hundred forty-four".