312312222021 has 8 divisors (see below), whose sum is σ = 418389833824. Its totient is φ = 207221379120.

The previous prime is 312312222007. The next prime is 312312222037. The reversal of 312312222021 is 120222213213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 312312222021 - 2⁹ = 312312221509 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 (312312222071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246691486 + ... + 246692751.

It is an arithmetic number, because the mean of its divisors is an integer number (52298729228).

Almost surely, 2^312312222021 is an apocalyptic number.

It is an amenable number.

312312222021 is a deficient number, since it is larger than the sum of its proper divisors (106077611803).

312312222021 is a wasteful number, since it uses less digits than its factorization.

312312222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493384451.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 312312222021 its reverse (120222213213), we get a palindrome (432534435234).

The spelling of 312312222021 in words is "three hundred twelve billion, three hundred twelve million, two hundred twenty-two thousand, twenty-one".