21611241713312 has 12 divisors (see below), whose sum is σ = 42547132123146. Its totient is φ = 10805620856640.

The previous prime is 21611241713251. The next prime is 21611241713437. The reversal of 21611241713312 is 21331714211612.

It can be written as a sum of positive squares in only one way, i.e., 11596776403216 + 10014465310096 = 3405404^2 + 3164564^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337675651739 + ... + 337675651802.

Almost surely, 2^{21611241713312} is an apocalyptic number.

It is an amenable number.

21611241713312 is a deficient number, since it is larger than the sum of its proper divisors (20935890409834).

21611241713312 is an equidigital number, since it uses as much as digits as its factorization.

21611241713312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675351303551 (or 675351303543 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

Adding to 21611241713312 its reverse (21331714211612), we get a palindrome (42942955924924).

The spelling of 21611241713312 in words is "twenty-one trillion, six hundred eleven billion, two hundred forty-one million, seven hundred thirteen thousand, three hundred twelve".