121202102002121 has 8 divisors (see below), whose sum is σ = 138644118266880. Its totient is φ = 103791943303488.

The previous prime is 121202102002099. The next prime is 121202102002139. The reversal of 121202102002121 is 121200201202121.

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 121202102002121 - 2⁶ = 121202102002057 is a prime.

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 121202102002121.

It is not an unprimeable number, because it can be changed into a prime (121202102202121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7964383376 + ... + 7964398593.

It is an arithmetic number, because the mean of its divisors is an integer number (17330514783360).

Almost surely, 2^{121202102002121} is an apocalyptic number.

It is an amenable number.

121202102002121 is a deficient number, since it is larger than the sum of its proper divisors (17442016264759).

121202102002121 is a wasteful number, since it uses less digits than its factorization.

121202102002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15928783063.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121202102002121 its reverse (121200201202121), we get a palindrome (242402303204242).

The spelling of 121202102002121 in words is "one hundred twenty-one trillion, two hundred two billion, one hundred two million, two thousand, one hundred twenty-one".