2121200332133 has 4 divisors (see below), whose sum is σ = 2145034043820. Its totient is φ = 2097366620448.

The previous prime is 2121200332127. The next prime is 2121200332183. The reversal of 2121200332133 is 3312330021212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 846543526084 + 1274656806049 = 920078^2 + 1129007^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121200332133 - 2¹⁰ = 2121200331109 is a prime.

It is a super-2 number, since 2×2121200332133² (a number of 25 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 = 2121200332099 and 2121200332108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121200332183) 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 3 ways as a sum of consecutive naturals, for example, 11916855710 + ... + 11916855887.

It is an arithmetic number, because the mean of its divisors is an integer number (536258510955).

Almost surely, 2^{2121200332133} is an apocalyptic number.

It is an amenable number.

2121200332133 is a deficient number, since it is larger than the sum of its proper divisors (23833711687).

2121200332133 is an equidigital number, since it uses as much as digits as its factorization.

2121200332133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23833711686.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 2121200332133 its reverse (3312330021212), we get a palindrome (5433530353345).

The spelling of 2121200332133 in words is "two trillion, one hundred twenty-one billion, two hundred million, three hundred thirty-two thousand, one hundred thirty-three".