312021222202231 has 12 divisors (see below), whose sum is σ = 323176929337992. Its totient is φ = 301238785890000.

The previous prime is 312021222202211. The next prime is 312021222202289. The reversal of 312021222202231 is 132202222120213.

It is not a de Polignac number, because 312021222202231 - 2⁹ = 312021222201719 is a prime.

It is a super-2 number, since 2×312021222202231² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312021222202196 and 312021222202205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312021222202211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 385205745 + ... + 386014906.

It is an arithmetic number, because the mean of its divisors is an integer number (26931410778166).

Almost surely, 2^{312021222202231} is an apocalyptic number.

312021222202231 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

312021222202231 is a deficient number, since it is larger than the sum of its proper divisors (11155707135761).

312021222202231 is an equidigital number, since it uses as much as digits as its factorization.

312021222202231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771221134 (or 771221103 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 312021222202231 its reverse (132202222120213), we get a palindrome (444223444322444).

The spelling of 312021222202231 in words is "three hundred twelve trillion, twenty-one billion, two hundred twenty-two million, two hundred two thousand, two hundred thirty-one".