11210201212221 has 24 divisors (see below), whose sum is σ = 17700536262240. Its totient is φ = 6780224119200.

The previous prime is 11210201212213. The next prime is 11210201212237. The reversal of 11210201212221 is 12221210201211.

11210201212221 is a `hidden beast` number, since 1 + 1 + 210 + 20 + 1 + 212 + 221 = 666.

It is not a de Polignac number, because 11210201212221 - 2³ = 11210201212213 is a prime.

It is a super-2 number, since 2×11210201212221² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11210201212194 and 11210201212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11210201212211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115261326 + ... + 115358543.

It is an arithmetic number, because the mean of its divisors is an integer number (737522344260).

Almost surely, 2^{11210201212221} is an apocalyptic number.

11210201212221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11210201212221 is a deficient number, since it is larger than the sum of its proper divisors (6490335050019).

11210201212221 is a wasteful number, since it uses less digits than its factorization.

11210201212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230620377 (or 230620374 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11210201212221 its reverse (12221210201211), we get a palindrome (23431411413432).

The spelling of 11210201212221 in words is "eleven trillion, two hundred ten billion, two hundred one million, two hundred twelve thousand, two hundred twenty-one".