11101331220321 has 16 divisors (see below), whose sum is σ = 15105857401728. Its totient is φ = 7250174131200.

The previous prime is 11101331220319. The next prime is 11101331220437. The reversal of 11101331220321 is 12302213310111.

It is not a de Polignac number, because 11101331220321 - 2¹ = 11101331220319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11101331220311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165950400 + ... + 166017281.

It is an arithmetic number, because the mean of its divisors is an integer number (944116087608).

Almost surely, 2^{11101331220321} is an apocalyptic number.

It is an amenable number.

11101331220321 is a deficient number, since it is larger than the sum of its proper divisors (4004526181407).

11101331220321 is a wasteful number, since it uses less digits than its factorization.

11101331220321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331967912.

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

Adding to 11101331220321 its reverse (12302213310111), we get a palindrome (23403544530432).

The spelling of 11101331220321 in words is "eleven trillion, one hundred one billion, three hundred thirty-one million, two hundred twenty thousand, three hundred twenty-one".