10030305121 has 4 divisors (see below), whose sum is σ = 10030558212. Its totient is φ = 10030052032.

The previous prime is 10030305119. The next prime is 10030305137. The reversal of 10030305121 is 12150303001.

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 2317074496 + 7713230625 = 48136^2 + 87825^2 .

It is a cyclic number.

It is not a de Polignac number, because 10030305121 - 2¹ = 10030305119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10030305095 and 10030305104.

It is not an unprimeable number, because it can be changed into a prime (10030305151) 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, 52756 + ... + 151141.

It is an arithmetic number, because the mean of its divisors is an integer number (2507639553).

Almost surely, 2^10030305121 is an apocalyptic number.

It is an amenable number.

10030305121 is a deficient number, since it is larger than the sum of its proper divisors (253091).

10030305121 is an equidigital number, since it uses as much as digits as its factorization.

10030305121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253090.

The product of its (nonzero) digits is 90, while the sum is 16.

Adding to 10030305121 its reverse (12150303001), we get a palindrome (22180608122).

The spelling of 10030305121 in words is "ten billion, thirty million, three hundred five thousand, one hundred twenty-one".