11101312303221 has 32 divisors (see below), whose sum is σ = 17701177212928. Its totient is φ = 6054878977920.

The previous prime is 11101312303177. The next prime is 11101312303247. The reversal of 11101312303221 is 12230321310111.

It is not a de Polignac number, because 11101312303221 - 2¹¹ = 11101312301173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101312303021) 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, 116751841 + ... + 116846886.

It is an arithmetic number, because the mean of its divisors is an integer number (553161787904).

Almost surely, 2^{11101312303221} is an apocalyptic number.

It is an amenable number.

11101312303221 is a deficient number, since it is larger than the sum of its proper divisors (6599864909707).

11101312303221 is a wasteful number, since it uses less digits than its factorization.

11101312303221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233598841.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 11101312303221 its reverse (12230321310111), we get a palindrome (23331633613332).

The spelling of 11101312303221 in words is "eleven trillion, one hundred one billion, three hundred twelve million, three hundred three thousand, two hundred twenty-one".