11212122020221 has 16 divisors (see below), whose sum is σ = 11973534566400. Its totient is φ = 10475732332800.

The previous prime is 11212122020119. The next prime is 11212122020269. The reversal of 11212122020221 is 12202022121211.

11212122020221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11212122020221 - 2¹³ = 11212122012029 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 (11212122050221) 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, 17156700 + ... + 17798218.

It is an arithmetic number, because the mean of its divisors is an integer number (748345910400).

Almost surely, 2^{11212122020221} is an apocalyptic number.

It is an amenable number.

11212122020221 is a deficient number, since it is larger than the sum of its proper divisors (761412546179).

11212122020221 is a wasteful number, since it uses less digits than its factorization.

11212122020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661020.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 11212122020221 its reverse (12202022121211), we get a palindrome (23414144141432).

The spelling of 11212122020221 in words is "eleven trillion, two hundred twelve billion, one hundred twenty-two million, twenty thousand, two hundred twenty-one".