212010321 has 8 divisors (see below), whose sum is σ = 283130944. Its totient is φ = 141114960.

The previous prime is 212010317. The next prime is 212010347. The reversal of 212010321 is 123010212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212010321 - 2² = 212010317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212010297 and 212010306.

It is not an unprimeable number, because it can be changed into a prime (212010301) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 54106 + ... + 57891.

It is an arithmetic number, because the mean of its divisors is an integer number (35391368).

Almost surely, 2^212010321 is an apocalyptic number.

It is an amenable number.

212010321 is a deficient number, since it is larger than the sum of its proper divisors (71120623).

212010321 is a wasteful number, since it uses less digits than its factorization.

212010321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112631.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 212010321 is about 14560.5741988426. The cubic root of 212010321 is about 596.2828719313.

Adding to 212010321 its reverse (123010212), we get a palindrome (335020533).

The spelling of 212010321 in words is "two hundred twelve million, ten thousand, three hundred twenty-one".