221120223021311 has 16 divisors (see below), whose sum is σ = 231573659353344. Its totient is φ = 210737269600704.

The previous prime is 221120223021281. The next prime is 221120223021331. The reversal of 221120223021311 is 113120322021122.

It is a cyclic number.

It is not a de Polignac number, because 221120223021311 - 2¹⁸ = 221120222759167 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221120223021331) 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, 12644840 + ... + 24538386.

It is an arithmetic number, because the mean of its divisors is an integer number (14473353709584).

Almost surely, 2^{221120223021311} is an apocalyptic number.

221120223021311 is a deficient number, since it is larger than the sum of its proper divisors (10453436332033).

221120223021311 is a wasteful number, since it uses less digits than its factorization.

221120223021311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11896510.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 221120223021311 its reverse (113120322021122), we get a palindrome (334240545042433).

The spelling of 221120223021311 in words is "two hundred twenty-one trillion, one hundred twenty billion, two hundred twenty-three million, twenty-one thousand, three hundred eleven".