121412020321 has 4 divisors (see below), whose sum is σ = 121412917444. Its totient is φ = 121411123200.

The previous prime is 121412020291. The next prime is 121412020357. The reversal of 121412020321 is 123020214121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 94271105296 + 27140915025 = 307036^2 + 164745^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121412020321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121412026321) 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, 199440 + ... + 531601.

It is an arithmetic number, because the mean of its divisors is an integer number (30353229361).

Almost surely, 2^121412020321 is an apocalyptic number.

It is an amenable number.

121412020321 is a deficient number, since it is larger than the sum of its proper divisors (897123).

121412020321 is an equidigital number, since it uses as much as digits as its factorization.

121412020321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897122.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 121412020321 its reverse (123020214121), we get a palindrome (244432234442).

The spelling of 121412020321 in words is "one hundred twenty-one billion, four hundred twelve million, twenty thousand, three hundred twenty-one".