121110110220221 has 8 divisors (see below), whose sum is σ = 126054948658080. Its totient is φ = 116216513631792.

The previous prime is 121110110220199. The next prime is 121110110220223. The reversal of 121110110220221 is 122022011011121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121110110220221 - 2¹⁴ = 121110110203837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121110110220221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121110110220223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12810457535 + ... + 12810466988.

It is an arithmetic number, because the mean of its divisors is an integer number (15756868582260).

Almost surely, 2^{121110110220221} is an apocalyptic number.

It is an amenable number.

121110110220221 is a deficient number, since it is larger than the sum of its proper divisors (4944838437859).

121110110220221 is a wasteful number, since it uses less digits than its factorization.

121110110220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25620924715.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121110110220221 its reverse (122022011011121), we get a palindrome (243132121231342).

The spelling of 121110110220221 in words is "one hundred twenty-one trillion, one hundred ten billion, one hundred ten million, two hundred twenty thousand, two hundred twenty-one".