110011203121221 has 24 divisors (see below), whose sum is σ = 163203650477400. Its totient is φ = 71356935868416.

The previous prime is 110011203121219. The next prime is 110011203121297. The reversal of 110011203121221 is 122121302110011.

It is a happy number.

110011203121221 is a `hidden beast` number, since 1 + 10 + 0 + 1 + 120 + 312 + 1 + 221 = 666.

110011203121221 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 83589146144100 + 26422056977121 = 9142710^2 + 5140239^2 .

It is not a de Polignac number, because 110011203121221 - 2¹ = 110011203121219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 110011203121194 and 110011203121203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110011203121321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10329061 + ... + 18075173.

It is an arithmetic number, because the mean of its divisors is an integer number (6800152103225).

Almost surely, 2^{110011203121221} is an apocalyptic number.

It is an amenable number.

110011203121221 is a deficient number, since it is larger than the sum of its proper divisors (53192447356179).

110011203121221 is a wasteful number, since it uses less digits than its factorization.

110011203121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7788805 (or 7788802 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 110011203121221 its reverse (122121302110011), we get a palindrome (232132505231232).

The spelling of 110011203121221 in words is "one hundred ten trillion, eleven billion, two hundred three million, one hundred twenty-one thousand, two hundred twenty-one".