312223212210 has 384 divisors, whose sum is σ = 982249390080. Its totient is φ = 62837558784.

The previous prime is 312223212199. The next prime is 312223212221. The reversal of 312223212210 is 12212322213.

It is an interprime number because it is at equal distance from previous prime (312223212199) and next prime (312223212221).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 210534129 + ... + 210535611.

It is an arithmetic number, because the mean of its divisors is an integer number (2557941120).

Almost surely, 2^312223212210 is an apocalyptic number.

312223212210 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 312223212210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (491124695040).

312223212210 is an abundant number, since it is smaller than the sum of its proper divisors (670026177870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312223212210 is a wasteful number, since it uses less digits than its factorization.

312223212210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022 (or 2015 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 312223212210 its reverse (12212322213), we get a palindrome (324435534423).

The spelling of 312223212210 in words is "three hundred twelve billion, two hundred twenty-three million, two hundred twelve thousand, two hundred ten".