300121200021 has 16 divisors (see below), whose sum is σ = 418528788480. Its totient is φ = 190937574960.

The previous prime is 300121199993. The next prime is 300121200061. The reversal of 300121200021 is 120002121003.

It is not a de Polignac number, because 300121200021 - 2⁹ = 300121199509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (300121200061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5016181 + ... + 5075658.

It is an arithmetic number, because the mean of its divisors is an integer number (26158049280).

Almost surely, 2^300121200021 is an apocalyptic number.

It is an amenable number.

300121200021 is a deficient number, since it is larger than the sum of its proper divisors (118407588459).

300121200021 is a wasteful number, since it uses less digits than its factorization.

300121200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10092296.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 300121200021 its reverse (120002121003), we get a palindrome (420123321024).

The spelling of 300121200021 in words is "three hundred billion, one hundred twenty-one million, two hundred thousand, twenty-one".