20121331302301 has 4 divisors (see below), whose sum is σ = 20167165770400. Its totient is φ = 20075496834204.

The previous prime is 20121331302283. The next prime is 20121331302409. The reversal of 20121331302301 is 10320313312102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20121331302301 - 2¹¹ = 20121331300253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121331302701) 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, 22917233391 + ... + 22917234268.

It is an arithmetic number, because the mean of its divisors is an integer number (5041791442600).

Almost surely, 2^{20121331302301} is an apocalyptic number.

It is an amenable number.

20121331302301 is a deficient number, since it is larger than the sum of its proper divisors (45834468099).

20121331302301 is an equidigital number, since it uses as much as digits as its factorization.

20121331302301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45834468098.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 20121331302301 its reverse (10320313312102), we get a palindrome (30441644614403).

The spelling of 20121331302301 in words is "twenty trillion, one hundred twenty-one billion, three hundred thirty-one million, three hundred two thousand, three hundred one".