10300212121 has 4 divisors (see below), whose sum is σ = 10300626532. Its totient is φ = 10299797712.

The previous prime is 10300212101. The next prime is 10300212137. The reversal of 10300212121 is 12121200301.

10300212121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7569000000 + 2731212121 = 87000^2 + 52261^2 .

It is a cyclic number.

It is not a de Polignac number, because 10300212121 - 2⁹ = 10300211609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10300212101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167370 + ... + 220483.

It is an arithmetic number, because the mean of its divisors is an integer number (2575156633).

Almost surely, 2^10300212121 is an apocalyptic number.

It is an amenable number.

10300212121 is a deficient number, since it is larger than the sum of its proper divisors (414411).

10300212121 is an equidigital number, since it uses as much as digits as its factorization.

10300212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414410.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 10300212121 its reverse (12121200301), we get a palindrome (22421412422).

The spelling of 10300212121 in words is "ten billion, three hundred million, two hundred twelve thousand, one hundred twenty-one".