11101211232321 has 32 divisors (see below), whose sum is σ = 17651877396480. Its totient is φ = 6067652716224.

The previous prime is 11101211232227. The next prime is 11101211232323. The reversal of 11101211232321 is 12323211210111.

It is not a de Polignac number, because 11101211232321 - 2²¹ = 11101209135169 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (11101211232323) 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, 44496595 + ... + 44745383.

It is an arithmetic number, because the mean of its divisors is an integer number (551621168640).

Almost surely, 2^{11101211232321} is an apocalyptic number.

It is an amenable number.

11101211232321 is a deficient number, since it is larger than the sum of its proper divisors (6550666164159).

11101211232321 is a wasteful number, since it uses less digits than its factorization.

11101211232321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341205.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 11101211232321 its reverse (12323211210111), we get a palindrome (23424422442432).

The spelling of 11101211232321 in words is "eleven trillion, one hundred one billion, two hundred eleven million, two hundred thirty-two thousand, three hundred twenty-one".