12020211120221 has 8 divisors (see below), whose sum is σ = 12314282642424. Its totient is φ = 11726182247680.

The previous prime is 12020211120191. The next prime is 12020211120251. The reversal of 12020211120221 is 12202111202021.

It is an interprime number because it is at equal distance from previous prime (12020211120191) and next prime (12020211120251).

It can be written as a sum of positive squares in 4 ways, for example, as 2173236156100 + 9846974964121 = 1474190^2 + 3137989^2 .

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 12020211120221 - 2⁶ = 12020211120157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12020211120221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020211120251) 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, 10091480 + ... + 11219553.

It is an arithmetic number, because the mean of its divisors is an integer number (1539285330303).

Almost surely, 2^{12020211120221} is an apocalyptic number.

It is an amenable number.

12020211120221 is a deficient number, since it is larger than the sum of its proper divisors (294071522203).

12020211120221 is a wasteful number, since it uses less digits than its factorization.

12020211120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21324831.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12020211120221 its reverse (12202111202021), we get a palindrome (24222322322242).

The spelling of 12020211120221 in words is "twelve trillion, twenty billion, two hundred eleven million, one hundred twenty thousand, two hundred twenty-one".