300131212121 has 4 divisors (see below), whose sum is σ = 323218228452. Its totient is φ = 277044195792.

The previous prime is 300131212103. The next prime is 300131212169. The reversal of 300131212121 is 121212131003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121212131003 = 52561 ⋅2306123.

It can be written as a sum of positive squares in 2 ways, for example, as 188498378896 + 111632833225 = 434164^2 + 334115^2 .

It is not a de Polignac number, because 300131212121 - 2¹⁸ = 300130949977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 300131212121.

It is not an unprimeable number, because it can be changed into a prime (300131212181) 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, 11543508146 + ... + 11543508171.

It is an arithmetic number, because the mean of its divisors is an integer number (80804557113).

Almost surely, 2^300131212121 is an apocalyptic number.

It is an amenable number.

300131212121 is a deficient number, since it is larger than the sum of its proper divisors (23087016331).

300131212121 is a wasteful number, since it uses less digits than its factorization.

300131212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23087016330.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 300131212121 its reverse (121212131003), we get a palindrome (421343343124).

The spelling of 300131212121 in words is "three hundred billion, one hundred thirty-one million, two hundred twelve thousand, one hundred twenty-one".