121221021110201 has 8 divisors (see below), whose sum is σ = 123408311853600. Its totient is φ = 119038153605760.

The previous prime is 121221021110197. The next prime is 121221021110237. The reversal of 121221021110201 is 102011120122121.

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 121221021110201 - 2² = 121221021110197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121221021110201.

It is not an unprimeable number, because it can be changed into a prime (121221021110291) 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, 1105754435 + ... + 1105864056.

It is an arithmetic number, because the mean of its divisors is an integer number (15426038981700).

Almost surely, 2^{121221021110201} is an apocalyptic number.

It is an amenable number.

121221021110201 is a deficient number, since it is larger than the sum of its proper divisors (2187290743399).

121221021110201 is an equidigital number, since it uses as much as digits as its factorization.

121221021110201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2211619479.

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

Adding to 121221021110201 its reverse (102011120122121), we get a palindrome (223232141232322).

The spelling of 121221021110201 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, twenty-one million, one hundred ten thousand, two hundred one".