12221020202021 has 8 divisors (see below), whose sum is σ = 12286799880000. Its totient is φ = 12155265868032.

The previous prime is 12221020201991. The next prime is 12221020202057. The reversal of 12221020202021 is 12020202012221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12221020202021 - 2³⁴ = 12203840332837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221020202081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5368595 + ... + 7298208.

It is an arithmetic number, because the mean of its divisors is an integer number (1535849985000).

Almost surely, 2^{12221020202021} is an apocalyptic number.

It is an amenable number.

12221020202021 is a deficient number, since it is larger than the sum of its proper divisors (65779677979).

12221020202021 is a wasteful number, since it uses less digits than its factorization.

12221020202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12671995.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12221020202021 its reverse (12020202012221), we get a palindrome (24241222214242).

The spelling of 12221020202021 in words is "twelve trillion, two hundred twenty-one billion, twenty million, two hundred two thousand, twenty-one".