121120110221 has 4 divisors (see below), whose sum is σ = 132131029344. Its totient is φ = 110109191100.

The previous prime is 121120110211. The next prime is 121120110233. The reversal of 121120110221 is 122011021121.

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 not a de Polignac number, because 121120110221 - 2¹⁰ = 121120109197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121120110196 and 121120110205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121120110211) 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, 5505459545 + ... + 5505459566.

It is an arithmetic number, because the mean of its divisors is an integer number (33032757336).

Almost surely, 2^121120110221 is an apocalyptic number.

121120110221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121120110221 is a deficient number, since it is larger than the sum of its proper divisors (11010919123).

121120110221 is a wasteful number, since it uses less digits than its factorization.

121120110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11010919122.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121120110221 its reverse (122011021121), we get a palindrome (243131131342).

The spelling of 121120110221 in words is "one hundred twenty-one billion, one hundred twenty million, one hundred ten thousand, two hundred twenty-one".