111020220321 has 4 divisors (see below), whose sum is σ = 148026960432. Its totient is φ = 74013480212.

The previous prime is 111020220317. The next prime is 111020220331. The reversal of 111020220321 is 123022020111.

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.

It is a cyclic number.

It is not a de Polignac number, because 111020220321 - 2² = 111020220317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111020220321.

It is not an unprimeable number, because it can be changed into a prime (111020220331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18503370051 + ... + 18503370056.

It is an arithmetic number, because the mean of its divisors is an integer number (37006740108).

Almost surely, 2^111020220321 is an apocalyptic number.

It is an amenable number.

111020220321 is a deficient number, since it is larger than the sum of its proper divisors (37006740111).

111020220321 is an equidigital number, since it uses as much as digits as its factorization.

111020220321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37006740110.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 111020220321 its reverse (123022020111), we get a palindrome (234042240432).

The spelling of 111020220321 in words is "one hundred eleven billion, twenty million, two hundred twenty thousand, three hundred twenty-one".