12021309414976 has 63 divisors (see below), whose sum is σ = 24424873127931. Its totient is φ = 5870289554304.

The previous prime is 12021309414973. The next prime is 12021309414977. The reversal of 12021309414976 is 67941490312021.

The square root of 12021309414976 is 3467176.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12021309414973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1192703505 + ... + 1192713583.

Almost surely, 2^{12021309414976} is an apocalyptic number.

12021309414976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

12021309414976 is the 3467176-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12021309414976

12021309414976 is an abundant number, since it is smaller than the sum of its proper divisors (12403563712955).

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

12021309414976 is an frugal number, since it uses more digits than its factorization.

12021309414976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20256 (or 10124 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 49.

Multiplying 12021309414976 by its sum of digits (49), we get a square (589044161333824 = 24270232²).

Adding to 12021309414976 its reverse (67941490312021), we get a palindrome (79962799726997).

The spelling of 12021309414976 in words is "twelve trillion, twenty-one billion, three hundred nine million, four hundred fourteen thousand, nine hundred seventy-six".