111020122200221 has 4 divisors (see below), whose sum is σ = 119560131600252. Its totient is φ = 102480112800192.

The previous prime is 111020122200209. The next prime is 111020122200227. The reversal of 111020122200221 is 122002221020111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57667104580996 + 53353017619225 = 7593886^2 + 7304315^2 .

It is a cyclic number.

It is not a de Polignac number, because 111020122200221 - 2²² = 111020118005917 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 111020122200221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111020122200227) 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, 4270004699996 + ... + 4270004700021.

It is an arithmetic number, because the mean of its divisors is an integer number (29890032900063).

Almost surely, 2^{111020122200221} is an apocalyptic number.

It is an amenable number.

111020122200221 is a deficient number, since it is larger than the sum of its proper divisors (8540009400031).

111020122200221 is an equidigital number, since it uses as much as digits as its factorization.

111020122200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8540009400030.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 111020122200221 its reverse (122002221020111), we get a palindrome (233022343220332).

The spelling of 111020122200221 in words is "one hundred eleven trillion, twenty billion, one hundred twenty-two million, two hundred thousand, two hundred twenty-one".