11210123221 has 16 divisors (see below), whose sum is σ = 12961278720. Its totient is φ = 9582151680.

The previous prime is 11210123179. The next prime is 11210123339. The reversal of 11210123221 is 12232101211.

It is a cyclic number.

It is not a de Polignac number, because 11210123221 - 2²¹ = 11208026069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11210123195 and 11210123204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11210123021) 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 15 ways as a sum of consecutive naturals, for example, 165445 + ... + 223141.

It is an arithmetic number, because the mean of its divisors is an integer number (810079920).

Almost surely, 2^11210123221 is an apocalyptic number.

11210123221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11210123221 is a deficient number, since it is larger than the sum of its proper divisors (1751155499).

11210123221 is a wasteful number, since it uses less digits than its factorization.

11210123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58764.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11210123221 its reverse (12232101211), we get a palindrome (23442224432).

It can be divided in two parts, 11210 and 123221, that added together give a palindrome (134431).

The spelling of 11210123221 in words is "eleven billion, two hundred ten million, one hundred twenty-three thousand, two hundred twenty-one".