2392001021 has 4 divisors (see below), whose sum is σ = 2395620444. Its totient is φ = 2388381600.

The previous prime is 2392000937. The next prime is 2392001023. The reversal of 2392001021 is 1201002932.

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 2078356921 + 313644100 = 45589^2 + 17710^2 .

It is a cyclic number.

It is not a de Polignac number, because 2392001021 - 2¹⁰ = 2391999997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2392000984 and 2392001002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2392001023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1808720 + ... + 1810041.

It is an arithmetic number, because the mean of its divisors is an integer number (598905111).

Almost surely, 2^2392001021 is an apocalyptic number.

It is an amenable number.

2392001021 is a deficient number, since it is larger than the sum of its proper divisors (3619423).

2392001021 is an equidigital number, since it uses as much as digits as its factorization.

2392001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3619422.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 2392001021 is about 48908.0874804975. The cubic root of 2392001021 is about 1337.3768056794.

Adding to 2392001021 its reverse (1201002932), we get a palindrome (3593003953).

The spelling of 2392001021 in words is "two billion, three hundred ninety-two million, one thousand, twenty-one".