121212112301 has 16 divisors (see below), whose sum is σ = 147323028096. Its totient is φ = 97353770496.

The previous prime is 121212112291. The next prime is 121212112339. The reversal of 121212112301 is 103211212121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121212112301 - 2⁶ = 121212112237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121212112301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121212112361) 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 15 ways as a sum of consecutive naturals, for example, 2216576 + ... + 2270601.

It is an arithmetic number, because the mean of its divisors is an integer number (9207689256).

Almost surely, 2^121212112301 is an apocalyptic number.

It is an amenable number.

121212112301 is a deficient number, since it is larger than the sum of its proper divisors (26110915795).

121212112301 is a wasteful number, since it uses less digits than its factorization.

121212112301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4487428.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 121212112301 its reverse (103211212121), we get a palindrome (224423324422).

The spelling of 121212112301 in words is "one hundred twenty-one billion, two hundred twelve million, one hundred twelve thousand, three hundred one".