312221022332 has 6 divisors (see below), whose sum is σ = 546386789088. Its totient is φ = 156110511164.

The previous prime is 312221022329. The next prime is 312221022359. The reversal of 312221022332 is 233220122213.

It is a junction number, because it is equal to n+sod(n) for n = 312221022298 and 312221022307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39027627788 + ... + 39027627795.

It is an arithmetic number, because the mean of its divisors is an integer number (91064464848).

Almost surely, 2^312221022332 is an apocalyptic number.

It is an amenable number.

312221022332 is a deficient number, since it is larger than the sum of its proper divisors (234165766756).

312221022332 is a wasteful number, since it uses less digits than its factorization.

312221022332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78055255587 (or 78055255585 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 312221022332 its reverse (233220122213), we get a palindrome (545441144545).

The spelling of 312221022332 in words is "three hundred twelve billion, two hundred twenty-one million, twenty-two thousand, three hundred thirty-two".