2130024021 has 4 divisors (see below), whose sum is σ = 2840032032. Its totient is φ = 1420016012.

The previous prime is 2130024019. The next prime is 2130024053. The reversal of 2130024021 is 1204200312.

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 2130024021 - 2¹ = 2130024019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130014021) 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, 355004001 + ... + 355004006.

It is an arithmetic number, because the mean of its divisors is an integer number (710008008).

Almost surely, 2^2130024021 is an apocalyptic number.

It is an amenable number.

2130024021 is a deficient number, since it is larger than the sum of its proper divisors (710008011).

2130024021 is an equidigital number, since it uses as much as digits as its factorization.

2130024021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710008010.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2130024021 is about 46152.1832744671. The cubic root of 2130024021 is about 1286.6531879160.

Adding to 2130024021 its reverse (1204200312), we get a palindrome (3334224333).

The spelling of 2130024021 in words is "two billion, one hundred thirty million, twenty-four thousand, twenty-one".