21312132300301 has 4 divisors (see below), whose sum is σ = 21338872743132. Its totient is φ = 21285391857472.

The previous prime is 21312132300233. The next prime is 21312132300307. The reversal of 21312132300301 is 10300323121312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17136039784900 + 4176092515401 = 4139570^2 + 2043549^2 .

It is a cyclic number.

It is not a de Polignac number, because 21312132300301 - 2³³ = 21303542365709 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 (21312132300307) 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, 13370220220 + ... + 13370221813.

It is an arithmetic number, because the mean of its divisors is an integer number (5334718185783).

Almost surely, 2^{21312132300301} is an apocalyptic number.

It is an amenable number.

21312132300301 is a deficient number, since it is larger than the sum of its proper divisors (26740442831).

21312132300301 is an equidigital number, since it uses as much as digits as its factorization.

21312132300301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26740442830.

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

Adding to 21312132300301 its reverse (10300323121312), we get a palindrome (31612455421613).

The spelling of 21312132300301 in words is "twenty-one trillion, three hundred twelve billion, one hundred thirty-two million, three hundred thousand, three hundred one".