312214041221 has 16 divisors (see below), whose sum is σ = 336503467200. Its totient is φ = 288788467968.

The previous prime is 312214041193. The next prime is 312214041233. The reversal of 312214041221 is 122140412213.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312214041221 is a prime.

It is a super-3 number, since 3×312214041221³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312214041281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 941366 + ... + 1229063.

It is an arithmetic number, because the mean of its divisors is an integer number (21031466700).

Almost surely, 2^312214041221 is an apocalyptic number.

It is an amenable number.

312214041221 is a deficient number, since it is larger than the sum of its proper divisors (24289425979).

312214041221 is a wasteful number, since it uses less digits than its factorization.

312214041221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2170628.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 312214041221 its reverse (122140412213), we get a palindrome (434354453434).

The spelling of 312214041221 in words is "three hundred twelve billion, two hundred fourteen million, forty-one thousand, two hundred twenty-one".