312100130221 has 4 divisors (see below), whose sum is σ = 340472869344. Its totient is φ = 283727391100.

The previous prime is 312100130219. The next prime is 312100130231. The reversal of 312100130221 is 122031001213.

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 312100130221 - 2¹ = 312100130219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312100130195 and 312100130204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312100130231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14186369545 + ... + 14186369566.

It is an arithmetic number, because the mean of its divisors is an integer number (85118217336).

Almost surely, 2^312100130221 is an apocalyptic number.

It is an amenable number.

312100130221 is a deficient number, since it is larger than the sum of its proper divisors (28372739123).

312100130221 is a wasteful number, since it uses less digits than its factorization.

312100130221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28372739122.

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

Adding to 312100130221 its reverse (122031001213), we get a palindrome (434131131434).

The spelling of 312100130221 in words is "three hundred twelve billion, one hundred million, one hundred thirty thousand, two hundred twenty-one".