2121332412444 has 96 divisors (see below), whose sum is σ = 5675668400640. Its totient is φ = 604085465088.

The previous prime is 2121332412439. The next prime is 2121332412449. The reversal of 2121332412444 is 4442142331212.

It is an interprime number because it is at equal distance from previous prime (2121332412439) and next prime (2121332412449).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121332412449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36670447 + ... + 36728249.

It is an arithmetic number, because the mean of its divisors is an integer number (59121545840).

Almost surely, 2^{2121332412444} is an apocalyptic number.

It is an amenable number.

2121332412444 is an abundant number, since it is smaller than the sum of its proper divisors (3554335988196).

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

2121332412444 is a wasteful number, since it uses less digits than its factorization.

2121332412444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59259 (or 59257 counting only the distinct ones).

The product of its digits is 36864, while the sum is 33.

Adding to 2121332412444 its reverse (4442142331212), we get a palindrome (6563474743656).

The spelling of 2121332412444 in words is "two trillion, one hundred twenty-one billion, three hundred thirty-two million, four hundred twelve thousand, four hundred forty-four".