312100222005 has 96 divisors (see below), whose sum is σ = 636522606720. Its totient is φ = 139467363840.

The previous prime is 312100221943. The next prime is 312100222061. The reversal of 312100222005 is 500222001213.

It is not a de Polignac number, because 312100222005 - 2¹¹ = 312100219957 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4203867 + ... + 4277463.

It is an arithmetic number, because the mean of its divisors is an integer number (6630443820).

Almost surely, 2^312100222005 is an apocalyptic number.

It is an amenable number.

312100222005 is an abundant number, since it is smaller than the sum of its proper divisors (324422384715).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312100222005 is a wasteful number, since it uses less digits than its factorization.

312100222005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74291 (or 74288 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 312100222005 its reverse (500222001213), we get a palindrome (812322223218).

The spelling of 312100222005 in words is "three hundred twelve billion, one hundred million, two hundred twenty-two thousand, five".