110021210221 has 4 divisors (see below), whose sum is σ = 118484380252. Its totient is φ = 101558040192.

The previous prime is 110021210129. The next prime is 110021210227. The reversal of 110021210221 is 122012120011.

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 28608001321 + 81413208900 = 169139^2 + 285330^2 .

It is a cyclic number.

It is not a de Polignac number, because 110021210221 - 2⁹ = 110021209709 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 8463170017 = 110021210221 / (1 + 1 + 0 + 0 + 2 + 1 + 2 + 1 + 0 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110021210227) 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, 4231584996 + ... + 4231585021.

It is an arithmetic number, because the mean of its divisors is an integer number (29621095063).

Almost surely, 2^110021210221 is an apocalyptic number.

It is an amenable number.

110021210221 is a deficient number, since it is larger than the sum of its proper divisors (8463170031).

110021210221 is an equidigital number, since it uses as much as digits as its factorization.

110021210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8463170030.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 110021210221 its reverse (122012120011), we get a palindrome (232033330232).

The spelling of 110021210221 in words is "one hundred ten billion, twenty-one million, two hundred ten thousand, two hundred twenty-one".