2121200533 has 4 divisors (see below), whose sum is σ = 2121347200. Its totient is φ = 2121053868.

The previous prime is 2121200479. The next prime is 2121200561. The reversal of 2121200533 is 3350021212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2121200533 - 2⁹ = 2121200021 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 2121200533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121203533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48933 + ... + 81466.

It is an arithmetic number, because the mean of its divisors is an integer number (530336800).

Almost surely, 2^2121200533 is an apocalyptic number.

It is an amenable number.

2121200533 is a deficient number, since it is larger than the sum of its proper divisors (146667).

2121200533 is a wasteful number, since it uses less digits than its factorization.

2121200533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146666.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 2121200533 is about 46056.4928430292. The cubic root of 2121200533 is about 1284.8741029438.

Adding to 2121200533 its reverse (3350021212), we get a palindrome (5471221745).

The spelling of 2121200533 in words is "two billion, one hundred twenty-one million, two hundred thousand, five hundred thirty-three".