2153334021 has 8 divisors (see below), whose sum is σ = 2887152480. Its totient is φ = 1427535792.

The previous prime is 2153334017. The next prime is 2153334061. The reversal of 2153334021 is 1204333512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2153334021 - 2² = 2153334017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2153333982 and 2153334000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153334061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2004430 + ... + 2005503.

It is an arithmetic number, because the mean of its divisors is an integer number (360894060).

Almost surely, 2^2153334021 is an apocalyptic number.

It is an amenable number.

2153334021 is a deficient number, since it is larger than the sum of its proper divisors (733818459).

2153334021 is a wasteful number, since it uses less digits than its factorization.

2153334021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4010115.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 2153334021 is about 46404.0302236778. The cubic root of 2153334021 is about 1291.3296829656.

Adding to 2153334021 its reverse (1204333512), we get a palindrome (3357667533).

The spelling of 2153334021 in words is "two billion, one hundred fifty-three million, three hundred thirty-four thousand, twenty-one".