11212020200221 has 8 divisors (see below), whose sum is σ = 11871845690040. Its totient is φ = 10552227475968.

The previous prime is 11212020200201. The next prime is 11212020200233. The reversal of 11212020200221 is 12200202021211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 257542040196 + 10954478160025 = 507486^2 + 3309755^2 .

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 11212020200221 - 2⁵ = 11212020200189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11212020200195 and 11212020200204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212020200201) 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, 7485136 + ... + 8857273.

It is an arithmetic number, because the mean of its divisors is an integer number (1483980711255).

Almost surely, 2^{11212020200221} is an apocalyptic number.

It is an amenable number.

11212020200221 is a deficient number, since it is larger than the sum of its proper divisors (659825489819).

11212020200221 is a wasteful number, since it uses less digits than its factorization.

11212020200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16382783.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11212020200221 its reverse (12200202021211), we get a palindrome (23412222221432).

The spelling of 11212020200221 in words is "eleven trillion, two hundred twelve billion, twenty million, two hundred thousand, two hundred twenty-one".