11202211201221 has 12 divisors (see below), whose sum is σ = 16252253551872. Its totient is φ = 7435241500776.

The previous prime is 11202211201211. The next prime is 11202211201231. The reversal of 11202211201221 is 12210211220211.

11202211201221 is a `hidden beast` number, since 1 + 1 + 20 + 221 + 1 + 201 + 221 = 666.

It is an interprime number because it is at equal distance from previous prime (11202211201211) and next prime (11202211201231).

It is not a de Polignac number, because 11202211201221 - 2⁶ = 11202211201157 is a prime.

It is a super-2 number, since 2×11202211201221² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11202211201194 and 11202211201203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11202211201211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2741606181 + ... + 2741610266.

It is an arithmetic number, because the mean of its divisors is an integer number (1354354462656).

Almost surely, 2^{11202211201221} is an apocalyptic number.

It is an amenable number.

11202211201221 is a deficient number, since it is larger than the sum of its proper divisors (5050042350651).

11202211201221 is a wasteful number, since it uses less digits than its factorization.

11202211201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5483216680 (or 5483216677 counting only the distinct ones).

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

Adding to 11202211201221 its reverse (12210211220211), we get a palindrome (23412422421432).

The spelling of 11202211201221 in words is "eleven trillion, two hundred two billion, two hundred eleven million, two hundred one thousand, two hundred twenty-one".