10303242021 has 6 divisors (see below), whose sum is σ = 14882460710. Its totient is φ = 6868828008.

The previous prime is 10303241987. The next prime is 10303242073. The reversal of 10303242021 is 12024230301.

It can be written as a sum of positive squares in only one way, i.e., 9497477025 + 805764996 = 97455^2 + 28386^2 .

It is not a de Polignac number, because 10303242021 - 2⁶ = 10303241957 is a prime.

It is a super-2 number, since 2×10303242021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10303241985 and 10303242003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10303242421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 572402326 + ... + 572402343.

Almost surely, 2^10303242021 is an apocalyptic number.

It is an amenable number.

10303242021 is a deficient number, since it is larger than the sum of its proper divisors (4579218689).

10303242021 is a wasteful number, since it uses less digits than its factorization.

10303242021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144804675 (or 1144804672 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 10303242021 its reverse (12024230301), we get a palindrome (22327472322).

The spelling of 10303242021 in words is "ten billion, three hundred three million, two hundred forty-two thousand, twenty-one".