12311332021016 has 64 divisors (see below), whose sum is σ = 26863828416000. Its totient is φ = 5180039688960.

The previous prime is 12311332021013. The next prime is 12311332021139. The reversal of 12311332021016 is 61012023311321.

It is a super-2 number, since 2×12311332021016² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12311332021013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66125 + ... + 4962563.

It is an arithmetic number, because the mean of its divisors is an integer number (419747319000).

Almost surely, 2^{12311332021016} 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 12311332021016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13431914208000).

12311332021016 is an abundant number, since it is smaller than the sum of its proper divisors (14552496394984).

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

12311332021016 is a wasteful number, since it uses less digits than its factorization.

12311332021016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4897272 (or 4897268 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 12311332021016 its reverse (61012023311321), we get a palindrome (73323355332337).

The spelling of 12311332021016 in words is "twelve trillion, three hundred eleven billion, three hundred thirty-two million, twenty-one thousand, sixteen".