121021212033 has 6 divisors (see below), whose sum is σ = 174808417394. Its totient is φ = 80680808016.

The previous prime is 121021212031. The next prime is 121021212071. The reversal of 121021212033 is 330212120121.

It can be written as a sum of positive squares in only one way, i.e., 116515043649 + 4506168384 = 341343^2 + 67128^2 .

It is not a de Polignac number, because 121021212033 - 2¹ = 121021212031 is a prime.

It is a super-2 number, since 2×121021212033² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121021211997 and 121021212015.

It is not an unprimeable number, because it can be changed into a prime (121021212031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6723400660 + ... + 6723400677.

Almost surely, 2^121021212033 is an apocalyptic number.

It is an amenable number.

121021212033 is a deficient number, since it is larger than the sum of its proper divisors (53787205361).

121021212033 is a wasteful number, since it uses less digits than its factorization.

121021212033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13446801343 (or 13446801340 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 121021212033 its reverse (330212120121), we get a palindrome (451233332154).

The spelling of 121021212033 in words is "one hundred twenty-one billion, twenty-one million, two hundred twelve thousand, thirty-three".