121103131110221 has 8 divisors (see below), whose sum is σ = 130534890840480. Its totient is φ = 111687961988592.

The previous prime is 121103131110163. The next prime is 121103131110233. The reversal of 121103131110221 is 122011131301121.

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 121103131110221 - 2¹⁰ = 121103131109197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121103131110193 and 121103131110202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121103131112221) 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, 4147636991 + ... + 4147666188.

It is an arithmetic number, because the mean of its divisors is an integer number (16316861355060).

Almost surely, 2^{121103131110221} is an apocalyptic number.

It is an amenable number.

121103131110221 is a deficient number, since it is larger than the sum of its proper divisors (9431759730259).

121103131110221 is a wasteful number, since it uses less digits than its factorization.

121103131110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8295304315.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 121103131110221 its reverse (122011131301121), we get a palindrome (243114262411342).

The spelling of 121103131110221 in words is "one hundred twenty-one trillion, one hundred three billion, one hundred thirty-one million, one hundred ten thousand, two hundred twenty-one".