111120221321 has 4 divisors (see below), whose sum is σ = 111122853072. Its totient is φ = 111117589572.

The previous prime is 111120221291. The next prime is 111120221327. The reversal of 111120221321 is 123122021111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 123122021111 = 3517 ⋅35007683.

It is a cyclic number.

It is not a de Polignac number, because 111120221321 - 2¹⁸ = 111119959177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111120221321.

It is not an unprimeable number, because it can be changed into a prime (111120221327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1251491 + ... + 1337336.

It is an arithmetic number, because the mean of its divisors is an integer number (27780713268).

Almost surely, 2^111120221321 is an apocalyptic number.

It is an amenable number.

111120221321 is a deficient number, since it is larger than the sum of its proper divisors (2631751).

111120221321 is an equidigital number, since it uses as much as digits as its factorization.

111120221321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631750.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 111120221321 its reverse (123122021111), we get a palindrome (234242242432).

The spelling of 111120221321 in words is "one hundred eleven billion, one hundred twenty million, two hundred twenty-one thousand, three hundred twenty-one".