312101322221 has 8 divisors (see below), whose sum is σ = 341805881760. Its totient is φ = 283210586352.

The previous prime is 312101322193. The next prime is 312101322233. The reversal of 312101322221 is 122223101213.

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

It is a cyclic number.

It is not a de Polignac number, because 312101322221 - 2¹⁴ = 312101305837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312101322193 and 312101322202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312101322821) 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, 203455115 + ... + 203456648.

It is an arithmetic number, because the mean of its divisors is an integer number (42725735220).

Almost surely, 2^312101322221 is an apocalyptic number.

It is an amenable number.

312101322221 is a deficient number, since it is larger than the sum of its proper divisors (29704559539).

312101322221 is a wasteful number, since it uses less digits than its factorization.

312101322221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406911835.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 312101322221 its reverse (122223101213), we get a palindrome (434324423434).

The spelling of 312101322221 in words is "three hundred twelve billion, one hundred one million, three hundred twenty-two thousand, two hundred twenty-one".