11020201101221 has 8 divisors (see below), whose sum is σ = 11868256808184. Its totient is φ = 10172195098560.

The previous prime is 11020201101179. The next prime is 11020201101253. The reversal of 11020201101221 is 12210110202011.

It can be written as a sum of positive squares in 4 ways, for example, as 1824836248225 + 9195364852996 = 1350865^2 + 3032386^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11020201101221 is a prime.

It is a super-2 number, since 2×11020201101221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11020201101196 and 11020201101205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11020201101271) 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, 11964950 + ... + 12853031.

It is an arithmetic number, because the mean of its divisors is an integer number (1483532101023).

Almost surely, 2^{11020201101221} is an apocalyptic number.

It is an amenable number.

11020201101221 is a deficient number, since it is larger than the sum of its proper divisors (848055706963).

11020201101221 is a wasteful number, since it uses less digits than its factorization.

11020201101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24852151.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11020201101221 its reverse (12210110202011), we get a palindrome (23230311303232).

The spelling of 11020201101221 in words is "eleven trillion, twenty billion, two hundred one million, one hundred one thousand, two hundred twenty-one".