312220222200 has 144 divisors (see below), whose sum is σ = 1072924486920. Its totient is φ = 81322456320.

The previous prime is 312220222183. The next prime is 312220222219. The reversal of 312220222200 is 2222022213.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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 35 ways as a sum of consecutive naturals, for example, 1939527 + ... + 2094326.

Almost surely, 2^312220222200 is an apocalyptic number.

312220222200 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312220222200 is an abundant number, since it is smaller than the sum of its proper divisors (760704264720).

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

312220222200 is a wasteful number, since it uses less digits than its factorization.

312220222200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4033918 (or 4033906 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 312220222200 its reverse (2222022213), we get a palindrome (314442244413).

The spelling of 312220222200 in words is "three hundred twelve billion, two hundred twenty million, two hundred twenty-two thousand, two hundred".