100312021313321 has 4 divisors (see below), whose sum is σ = 100628463021252. Its totient is φ = 99995579605392.

The previous prime is 100312021313293. The next prime is 100312021313369. The reversal of 100312021313321 is 123313120213001.

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 26546597170921 + 73765424142400 = 5152339^2 + 8588680^2 .

It is a cyclic number.

It is not a de Polignac number, because 100312021313321 - 2³⁸ = 100037143406377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100312021303321) 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, 158220853490 + ... + 158220854123.

It is an arithmetic number, because the mean of its divisors is an integer number (25157115755313).

Almost surely, 2^{100312021313321} is an apocalyptic number.

It is an amenable number.

100312021313321 is a deficient number, since it is larger than the sum of its proper divisors (316441707931).

100312021313321 is an equidigital number, since it uses as much as digits as its factorization.

100312021313321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316441707930.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 100312021313321 its reverse (123313120213001), we get a palindrome (223625141526322).

The spelling of 100312021313321 in words is "one hundred trillion, three hundred twelve billion, twenty-one million, three hundred thirteen thousand, three hundred twenty-one".