121300312021 has 16 divisors (see below), whose sum is σ = 143116779520. Its totient is φ = 100606555440.

The previous prime is 121300312019. The next prime is 121300312033. The reversal of 121300312021 is 120213003121.

It is a cyclic number.

It is not a de Polignac number, because 121300312021 - 2¹ = 121300312019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121300311986 and 121300312004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121300312051) 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, 2332420 + ... + 2383858.

It is an arithmetic number, because the mean of its divisors is an integer number (8944798720).

Almost surely, 2^121300312021 is an apocalyptic number.

It is an amenable number.

121300312021 is a deficient number, since it is larger than the sum of its proper divisors (21816467499).

121300312021 is a wasteful number, since it uses less digits than its factorization.

121300312021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62344.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 121300312021 its reverse (120213003121), we get a palindrome (241513315142).

The spelling of 121300312021 in words is "one hundred twenty-one billion, three hundred million, three hundred twelve thousand, twenty-one".