121111011201 has 8 divisors (see below), whose sum is σ = 165845709184. Its totient is φ = 78558493680.

The previous prime is 121111011199. The next prime is 121111011209. The reversal of 121111011201 is 102110111121.

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

It is not a de Polignac number, because 121111011201 - 2¹ = 121111011199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121111011209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545544985 + ... + 545545206.

It is an arithmetic number, because the mean of its divisors is an integer number (20730713648).

Almost surely, 2^121111011201 is an apocalyptic number.

It is an amenable number.

121111011201 is a deficient number, since it is larger than the sum of its proper divisors (44734697983).

121111011201 is a wasteful number, since it uses less digits than its factorization.

121111011201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091090231.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 121111011201 its reverse (102110111121), we get a palindrome (223221122322).

The spelling of 121111011201 in words is "one hundred twenty-one billion, one hundred eleven million, eleven thousand, two hundred one".