110131332120221 has 4 divisors (see below), whose sum is σ = 110131473206844. Its totient is φ = 110131191033600.

The previous prime is 110131332120209. The next prime is 110131332120239. The reversal of 110131332120221 is 122021233131011.

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 45937745952121 + 64193586168100 = 6777739^2 + 8012090^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110131332120221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110131332720221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69365870 + ... + 70935791.

It is an arithmetic number, because the mean of its divisors is an integer number (27532868301711).

Almost surely, 2^{110131332120221} is an apocalyptic number.

It is an amenable number.

110131332120221 is a deficient number, since it is larger than the sum of its proper divisors (141086623).

110131332120221 is an equidigital number, since it uses as much as digits as its factorization.

110131332120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141086622.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 110131332120221 its reverse (122021233131011), we get a palindrome (232152565251232).

The spelling of 110131332120221 in words is "one hundred ten trillion, one hundred thirty-one billion, three hundred thirty-two million, one hundred twenty thousand, two hundred twenty-one".