111321220330221 has 16 divisors (see below), whose sum is σ = 162110715294528. Its totient is φ = 67388681148800.

The previous prime is 111321220330169. The next prime is 111321220330247. The reversal of 111321220330221 is 122033022123111.

It is not a de Polignac number, because 111321220330221 - 2⁶ = 111321220330157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111321220330191 and 111321220330200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111321220330421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1968099090 + ... + 1968155651.

It is an arithmetic number, because the mean of its divisors is an integer number (10131919705908).

Almost surely, 2^{111321220330221} is an apocalyptic number.

111321220330221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111321220330221 is a deficient number, since it is larger than the sum of its proper divisors (50789494964307).

111321220330221 is a wasteful number, since it uses less digits than its factorization.

111321220330221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3936255612.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 111321220330221 its reverse (122033022123111), we get a palindrome (233354242453332).

The spelling of 111321220330221 in words is "one hundred eleven trillion, three hundred twenty-one billion, two hundred twenty million, three hundred thirty thousand, two hundred twenty-one".