12021301032221 has 16 divisors (see below), whose sum is σ = 13072900503936. Its totient is φ = 10987847539776.

The previous prime is 12021301032211. The next prime is 12021301032239. The reversal of 12021301032221 is 12223010312021.

It is a cyclic number.

It is not a de Polignac number, because 12021301032221 - 2¹⁰ = 12021301031197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12021301032193 and 12021301032202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021301032211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14448866 + ... + 15258188.

It is an arithmetic number, because the mean of its divisors is an integer number (817056281496).

Almost surely, 2^{12021301032221} is an apocalyptic number.

It is an amenable number.

12021301032221 is a deficient number, since it is larger than the sum of its proper divisors (1051599471715).

12021301032221 is a wasteful number, since it uses less digits than its factorization.

12021301032221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820532.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12021301032221 its reverse (12223010312021), we get a palindrome (24244311344242).

The spelling of 12021301032221 in words is "twelve trillion, twenty-one billion, three hundred one million, thirty-two thousand, two hundred twenty-one".