10305121542421 has 4 divisors (see below), whose sum is σ = 10311526218700. Its totient is φ = 10298716866144.

The previous prime is 10305121542409. The next prime is 10305121542487. The reversal of 10305121542421 is 12424512150301.

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 6662004939396 + 3643116603025 = 2581086^2 + 1908695^2 .

It is a cyclic number.

It is not a de Polignac number, because 10305121542421 - 2²³ = 10305113153813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10305127542421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3202335726 + ... + 3202338943.

It is an arithmetic number, because the mean of its divisors is an integer number (2577881554675).

Almost surely, 2^{10305121542421} is an apocalyptic number.

It is an amenable number.

10305121542421 is a deficient number, since it is larger than the sum of its proper divisors (6404676279).

10305121542421 is an equidigital number, since it uses as much as digits as its factorization.

10305121542421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6404676278.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 10305121542421 its reverse (12424512150301), we get a palindrome (22729633692722).

The spelling of 10305121542421 in words is "ten trillion, three hundred five billion, one hundred twenty-one million, five hundred forty-two thousand, four hundred twenty-one".