110221202121 has 4 divisors (see below), whose sum is σ = 146961602832. Its totient is φ = 73480801412.

The previous prime is 110221202111. The next prime is 110221202249. The reversal of 110221202121 is 121202122011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110221202121 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 110221202121.

It is not an unprimeable number, because it can be changed into a prime (110221202111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18370200351 + ... + 18370200356.

It is an arithmetic number, because the mean of its divisors is an integer number (36740400708).

Almost surely, 2^110221202121 is an apocalyptic number.

It is an amenable number.

110221202121 is a deficient number, since it is larger than the sum of its proper divisors (36740400711).

110221202121 is an equidigital number, since it uses as much as digits as its factorization.

110221202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36740400710.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 110221202121 its reverse (121202122011), we get a palindrome (231423324132).

The spelling of 110221202121 in words is "one hundred ten billion, two hundred twenty-one million, two hundred two thousand, one hundred twenty-one".