111202022000221 has 4 divisors (see below), whose sum is σ = 111208691603772. Its totient is φ = 111195352396672.

The previous prime is 111202022000137. The next prime is 111202022000231. The reversal of 111202022000221 is 122000220202111.

It is a happy number.

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 104568744484996 + 6633277515225 = 10225886^2 + 2575515^2 .

It is a cyclic number.

It is not a de Polignac number, because 111202022000221 - 2²¹ = 111202019903069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111202022000195 and 111202022000204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111202022000231) 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, 3334776766 + ... + 3334810111.

It is an arithmetic number, because the mean of its divisors is an integer number (27802172900943).

Almost surely, 2^{111202022000221} is an apocalyptic number.

It is an amenable number.

111202022000221 is a deficient number, since it is larger than the sum of its proper divisors (6669603551).

111202022000221 is an equidigital number, since it uses as much as digits as its factorization.

111202022000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6669603550.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 111202022000221 its reverse (122000220202111), we get a palindrome (233202242202332).

The spelling of 111202022000221 in words is "one hundred eleven trillion, two hundred two billion, twenty-two million, two hundred twenty-one", and thus it is an aban number.