212022312 has 16 divisors (see below), whose sum is σ = 530055840. Its totient is φ = 70674096.

The previous prime is 212022301. The next prime is 212022323. The reversal of 212022312 is 213220212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (212022301) and next prime (212022323).

It is a junction number, because it is equal to n+sod(n) for n = 212022291 and 212022300.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4417108 + ... + 4417155.

It is an arithmetic number, because the mean of its divisors is an integer number (33128490).

Almost surely, 2^212022312 is an apocalyptic number.

It is an amenable number.

212022312 is an abundant number, since it is smaller than the sum of its proper divisors (318033528).

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

212022312 is a wasteful number, since it uses less digits than its factorization.

212022312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8834272 (or 8834268 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 212022312 is about 14560.9859556281. The cubic root of 212022312 is about 596.2941133543.

Adding to 212022312 its reverse (213220212), we get a palindrome (425242524).

The spelling of 212022312 in words is "two hundred twelve million, twenty-two thousand, three hundred twelve".