10340252021 has 4 divisors (see below), whose sum is σ = 11280274944. Its totient is φ = 9400229100.

The previous prime is 10340252003. The next prime is 10340252047. The reversal of 10340252021 is 12025204301.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12025204301 = 11 ⋅1093200391.

It is a cyclic number.

It is not a de Polignac number, because 10340252021 - 2¹⁰ = 10340250997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10340251984 and 10340252002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10340272021) 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, 470011445 + ... + 470011466.

It is an arithmetic number, because the mean of its divisors is an integer number (2820068736).

Almost surely, 2^10340252021 is an apocalyptic number.

10340252021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10340252021 is a deficient number, since it is larger than the sum of its proper divisors (940022923).

10340252021 is an equidigital number, since it uses as much as digits as its factorization.

10340252021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940022922.

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 10340252021 its reverse (12025204301), we get a palindrome (22365456322).

The spelling of 10340252021 in words is "ten billion, three hundred forty million, two hundred fifty-two thousand, twenty-one".