212250521 has 8 divisors (see below), whose sum is σ = 250397184. Its totient is φ = 176060160.

The previous prime is 212250517. The next prime is 212250527. The reversal of 212250521 is 125052212.

It is a happy number.

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

It is not a de Polignac number, because 212250521 - 2² = 212250517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212250493 and 212250502.

It is not an unprimeable number, because it can be changed into a prime (212250527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 488840 + ... + 489273.

It is an arithmetic number, because the mean of its divisors is an integer number (31299648).

Almost surely, 2^212250521 is an apocalyptic number.

It is an amenable number.

212250521 is a deficient number, since it is larger than the sum of its proper divisors (38146663).

212250521 is an equidigital number, since it uses as much as digits as its factorization.

212250521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978151.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 212250521 is about 14568.8201649962. The cubic root of 212250521 is about 596.5079758929.

The spelling of 212250521 in words is "two hundred twelve million, two hundred fifty thousand, five hundred twenty-one".