110121020221 has 4 divisors (see below), whose sum is σ = 110122012000. Its totient is φ = 110120028444.

The previous prime is 110121020213. The next prime is 110121020293. The reversal of 110121020221 is 122020121011.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 110121020221 - 2³ = 110121020213 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 (110121020521) 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, 304791 + ... + 559588.

It is an arithmetic number, because the mean of its divisors is an integer number (27530503000).

Almost surely, 2^110121020221 is an apocalyptic number.

It is an amenable number.

110121020221 is a deficient number, since it is larger than the sum of its proper divisors (991779).

110121020221 is an equidigital number, since it uses as much as digits as its factorization.

110121020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991778.

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

Adding to 110121020221 its reverse (122020121011), we get a palindrome (232141141232).

The spelling of 110121020221 in words is "one hundred ten billion, one hundred twenty-one million, twenty thousand, two hundred twenty-one".