121021302121 has 8 divisors (see below), whose sum is σ = 125274801600. Its totient is φ = 116773159440.

The previous prime is 121021302119. The next prime is 121021302131. The reversal of 121021302121 is 121203120121.

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 121021302121 - 2¹ = 121021302119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121021302095 and 121021302104.

It is not an unprimeable number, because it can be changed into a prime (121021302131) 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, 1293195 + ... + 1383616.

It is an arithmetic number, because the mean of its divisors is an integer number (15659350200).

Almost surely, 2^121021302121 is an apocalyptic number.

It is an amenable number.

121021302121 is a deficient number, since it is larger than the sum of its proper divisors (4253499479).

121021302121 is a wasteful number, since it uses less digits than its factorization.

121021302121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2678399.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 121021302121 its reverse (121203120121), we get a palindrome (242224422242).

The spelling of 121021302121 in words is "one hundred twenty-one billion, twenty-one million, three hundred two thousand, one hundred twenty-one".