11020212120221 has 4 divisors (see below), whose sum is σ = 11020292842944. Its totient is φ = 11020131397500.

The previous prime is 11020212120217. The next prime is 11020212120257. The reversal of 11020212120221 is 12202121202011.

11020212120221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11020212120221 - 2² = 11020212120217 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 11020212120221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11020212122221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40156235 + ... + 40429736.

It is an arithmetic number, because the mean of its divisors is an integer number (2755073210736).

Almost surely, 2^{11020212120221} is an apocalyptic number.

It is an amenable number.

11020212120221 is a deficient number, since it is larger than the sum of its proper divisors (80722723).

11020212120221 is an equidigital number, since it uses as much as digits as its factorization.

11020212120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80722722.

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

Adding to 11020212120221 its reverse (12202121202011), we get a palindrome (23222333322232).

The spelling of 11020212120221 in words is "eleven trillion, twenty billion, two hundred twelve million, one hundred twenty thousand, two hundred twenty-one".