10320031221012 has 168 divisors, whose sum is σ = 28769235112800. Its totient is φ = 3228497828928.

The previous prime is 10320031220929. The next prime is 10320031221043. The reversal of 10320031221012 is 21012213002301.

10320031221012 is a `hidden beast` number, since 1 + 0 + 320 + 0 + 312 + 21 + 0 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 55 ways as a sum of consecutive naturals, for example, 5057814 + ... + 6798642.

It is an arithmetic number, because the mean of its divisors is an integer number (171245447100).

Almost surely, 2^{10320031221012} is an apocalyptic number.

10320031221012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10320031221012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14384617556400).

10320031221012 is an abundant number, since it is smaller than the sum of its proper divisors (18449203891788).

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

10320031221012 is a wasteful number, since it uses less digits than its factorization.

10320031221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740977 (or 1740960 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 10320031221012 its reverse (21012213002301), we get a palindrome (31332244223313).

The spelling of 10320031221012 in words is "ten trillion, three hundred twenty billion, thirty-one million, two hundred twenty-one thousand, twelve".