121201123110321 has 16 divisors (see below), whose sum is σ = 163118538918720. Its totient is φ = 80042541284160.

The previous prime is 121201123110251. The next prime is 121201123110349. The reversal of 121201123110321 is 123011321102121.

It is not a de Polignac number, because 121201123110321 - 2⁹ = 121201123109809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121201123510321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37607775 + ... + 40703156.

It is an arithmetic number, because the mean of its divisors is an integer number (10194908682420).

Almost surely, 2^{121201123110321} is an apocalyptic number.

It is an amenable number.

121201123110321 is a deficient number, since it is larger than the sum of its proper divisors (41917415808399).

121201123110321 is a wasteful number, since it uses less digits than its factorization.

121201123110321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78315776.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 121201123110321 its reverse (123011321102121), we get a palindrome (244212444212442).

The spelling of 121201123110321 in words is "one hundred twenty-one trillion, two hundred one billion, one hundred twenty-three million, one hundred ten thousand, three hundred twenty-one".