301321012121 has 4 divisors (see below), whose sum is σ = 301323046500. Its totient is φ = 301318977744.

The previous prime is 301321012117. The next prime is 301321012127. The reversal of 301321012121 is 121210123103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121210123103 = 2903 ⋅41753401.

It can be written as a sum of positive squares in 2 ways, for example, as 1744315225 + 299576696896 = 41765^2 + 547336^2 .

It is a cyclic number.

It is not a de Polignac number, because 301321012121 - 2² = 301321012117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 301321012121.

It is not an unprimeable number, because it can be changed into a prime (301321012127) 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, 775946 + ... + 1097603.

It is an arithmetic number, because the mean of its divisors is an integer number (75330761625).

Almost surely, 2^301321012121 is an apocalyptic number.

It is an amenable number.

301321012121 is a deficient number, since it is larger than the sum of its proper divisors (2034379).

301321012121 is a wasteful number, since it uses less digits than its factorization.

301321012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2034378.

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

Adding to 301321012121 its reverse (121210123103), we get a palindrome (422531135224).

The spelling of 301321012121 in words is "three hundred one billion, three hundred twenty-one million, twelve thousand, one hundred twenty-one".