2533312021 has 4 divisors (see below), whose sum is σ = 2568992544. Its totient is φ = 2497631500.

The previous prime is 2533312007. The next prime is 2533312031. The reversal of 2533312021 is 1202133352.

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 2533312021 - 2⁹ = 2533311509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2533311983 and 2533312001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2533312031) 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, 17840155 + ... + 17840296.

It is an arithmetic number, because the mean of its divisors is an integer number (642248136).

Almost surely, 2^2533312021 is an apocalyptic number.

It is an amenable number.

2533312021 is a deficient number, since it is larger than the sum of its proper divisors (35680523).

2533312021 is an equidigital number, since it uses as much as digits as its factorization.

2533312021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35680522.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 2533312021 is about 50332.0178514631. The cubic root of 2533312021 is about 1363.2104124099.

Adding to 2533312021 its reverse (1202133352), we get a palindrome (3735445373).

The spelling of 2533312021 in words is "two billion, five hundred thirty-three million, three hundred twelve thousand, twenty-one".