312230022221 has 8 divisors (see below), whose sum is σ = 337342989984. Its totient is φ = 287273522160.

The previous prime is 312230022199. The next prime is 312230022227. The reversal of 312230022221 is 122220032213.

It is a happy number.

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 312230022221 - 2²² = 312225827917 is a prime.

It is a super-2 number, since 2×312230022221² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312230022193 and 312230022202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312230022227) 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, 39112775 + ... + 39120756.

It is an arithmetic number, because the mean of its divisors is an integer number (42167873748).

Almost surely, 2^312230022221 is an apocalyptic number.

It is an amenable number.

312230022221 is a deficient number, since it is larger than the sum of its proper divisors (25112967763).

312230022221 is a wasteful number, since it uses less digits than its factorization.

312230022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78233851.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 312230022221 its reverse (122220032213), we get a palindrome (434450054434).

The spelling of 312230022221 in words is "three hundred twelve billion, two hundred thirty million, twenty-two thousand, two hundred twenty-one".