10302003000021 has 4 divisors (see below), whose sum is σ = 13736004000032. Its totient is φ = 6868002000012.

The previous prime is 10302003000017. The next prime is 10302003000053. The reversal of 10302003000021 is 12000030020301.

It is a happy number.

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 not a de Polignac number, because 10302003000021 - 2² = 10302003000017 is a prime.

It is a super-2 number, since 2×10302003000021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10302002999970 and 10302003000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10302003002021) 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, 1717000500001 + ... + 1717000500006.

It is an arithmetic number, because the mean of its divisors is an integer number (3434001000008).

Almost surely, 2^{10302003000021} is an apocalyptic number.

It is an amenable number.

10302003000021 is a deficient number, since it is larger than the sum of its proper divisors (3434001000011).

10302003000021 is an equidigital number, since it uses as much as digits as its factorization.

10302003000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3434001000010.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 10302003000021 its reverse (12000030020301), we get a palindrome (22302033020322).

The spelling of 10302003000021 in words is "ten trillion, three hundred two billion, three million, twenty-one", and thus it is an aban number.