21366344366312 has 32 divisors (see below), whose sum is σ = 43716714491520. Its totient is φ = 9709123981440.

The previous prime is 21366344366239. The next prime is 21366344366321.

21366344366312 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×21366344366312³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35332613 + ... + 35932244.

It is an arithmetic number, because the mean of its divisors is an integer number (1366147327860).

Almost surely, 2^{21366344366312} is an apocalyptic number.

21366344366312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21366344366312 is an abundant number, since it is smaller than the sum of its proper divisors (22350370125208).

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

21366344366312 is a wasteful number, since it uses less digits than its factorization.

21366344366312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71268281 (or 71268277 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 50.

The spelling of 21366344366312 in words is "twenty-one trillion, three hundred sixty-six billion, three hundred forty-four million, three hundred sixty-six thousand, three hundred twelve".