11212320340221 has 32 divisors (see below), whose sum is σ = 20072405649408. Its totient is φ = 5376537224640.

The previous prime is 11212320340189. The next prime is 11212320340223. The reversal of 11212320340221 is 12204302321211.

It is not a de Polignac number, because 11212320340221 - 2⁵ = 11212320340189 is a prime.

It is a super-2 number, since 2×11212320340221² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11212320340191 and 11212320340200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212320340223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1866850201 + ... + 1866856206.

It is an arithmetic number, because the mean of its divisors is an integer number (627262676544).

Almost surely, 2^{11212320340221} is an apocalyptic number.

11212320340221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11212320340221 is a deficient number, since it is larger than the sum of its proper divisors (8860085309187).

11212320340221 is a wasteful number, since it uses less digits than its factorization.

11212320340221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3733706441.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 11212320340221 its reverse (12204302321211), we get a palindrome (23416622661432).

The spelling of 11212320340221 in words is "eleven trillion, two hundred twelve billion, three hundred twenty million, three hundred forty thousand, two hundred twenty-one".