212450221 has 8 divisors (see below), whose sum is σ = 215613504. Its totient is φ = 209293920.

The previous prime is 212450123. The next prime is 212450237. The reversal of 212450221 is 122054212.

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

It is not a de Polignac number, because 212450221 - 2¹³ = 212442029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212450281) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 116406 + ... + 118216.

It is an arithmetic number, because the mean of its divisors is an integer number (26951688).

Almost surely, 2^212450221 is an apocalyptic number.

It is an amenable number.

212450221 is a deficient number, since it is larger than the sum of its proper divisors (3163283).

212450221 is a wasteful number, since it uses less digits than its factorization.

212450221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3491.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 212450221 is about 14575.6722314959. The cubic root of 212450221 is about 596.6949959327.

The spelling of 212450221 in words is "two hundred twelve million, four hundred fifty thousand, two hundred twenty-one".