111320332021 has 4 divisors (see below), whose sum is σ = 111323412544. Its totient is φ = 111317251500.

The previous prime is 111320332003. The next prime is 111320332073. The reversal of 111320332021 is 120233023111.

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: 120233023111 = 67 ⋅1794522733.

It is a cyclic number.

It is not a de Polignac number, because 111320332021 - 2¹⁹ = 111319807733 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 111320332021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111320332621) 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, 1485405 + ... + 1558546.

It is an arithmetic number, because the mean of its divisors is an integer number (27830853136).

Almost surely, 2^111320332021 is an apocalyptic number.

It is an amenable number.

111320332021 is a deficient number, since it is larger than the sum of its proper divisors (3080523).

111320332021 is an equidigital number, since it uses as much as digits as its factorization.

111320332021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080522.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 111320332021 its reverse (120233023111), we get a palindrome (231553355132).

The spelling of 111320332021 in words is "one hundred eleven billion, three hundred twenty million, three hundred thirty-two thousand, twenty-one".