121212122002221 has 8 divisors (see below), whose sum is σ = 161623852536384. Its totient is φ = 80804236401440.

The previous prime is 121212122002211. The next prime is 121212122002267. The reversal of 121212122002221 is 122200221212121.

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 121212122002221 - 2³⁵ = 121177762263853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121212122002211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 961159785 + ... + 961285886.

It is an arithmetic number, because the mean of its divisors is an integer number (20202981567048).

Almost surely, 2^{121212122002221} is an apocalyptic number.

It is an amenable number.

121212122002221 is a deficient number, since it is larger than the sum of its proper divisors (40411730534163).

121212122002221 is a wasteful number, since it uses less digits than its factorization.

121212122002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922466691.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 121212122002221 its reverse (122200221212121), we get a palindrome (243412343214342).

The spelling of 121212122002221 in words is "one hundred twenty-one trillion, two hundred twelve billion, one hundred twenty-two million, two thousand, two hundred twenty-one".