110011312020221 has 4 divisors (see below), whose sum is σ = 112086997152732. Its totient is φ = 107935626887712.

The previous prime is 110011312020209. The next prime is 110011312020223. The reversal of 110011312020221 is 122020213110011.

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 99980700931225 + 10030611088996 = 9999035^2 + 3167114^2 .

It is a cyclic number.

It is not a de Polignac number, because 110011312020221 - 2⁶ = 110011312020157 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 110011312020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110011312020223) 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, 1037842566176 + ... + 1037842566281.

It is an arithmetic number, because the mean of its divisors is an integer number (28021749288183).

Almost surely, 2^{110011312020221} is an apocalyptic number.

It is an amenable number.

110011312020221 is a deficient number, since it is larger than the sum of its proper divisors (2075685132511).

110011312020221 is an equidigital number, since it uses as much as digits as its factorization.

110011312020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075685132510.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 110011312020221 its reverse (122020213110011), we get a palindrome (232031525130232).

The spelling of 110011312020221 in words is "one hundred ten trillion, eleven billion, three hundred twelve million, twenty thousand, two hundred twenty-one".