212522319 has 8 divisors (see below), whose sum is σ = 314847920. Its totient is φ = 141681528.

The previous prime is 212522293. The next prime is 212522327. The reversal of 212522319 is 913225212.

It is a happy number.

It is not a de Polignac number, because 212522319 - 2⁹ = 212521807 is a prime.

It is a super-2 number, since 2×212522319² = 90331472146275522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 7871197 = 212522319 / (2 + 1 + 2 + 5 + 2 + 2 + 3 + 1 + 9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212522292 and 212522301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212522399) 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, 3935572 + ... + 3935625.

It is an arithmetic number, because the mean of its divisors is an integer number (39355990).

Almost surely, 2^212522319 is an apocalyptic number.

212522319 is a deficient number, since it is larger than the sum of its proper divisors (102325601).

212522319 is an equidigital number, since it uses as much as digits as its factorization.

212522319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7871206 (or 7871200 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 212522319 is about 14578.1452523975. The cubic root of 212522319 is about 596.7624872726.

The spelling of 212522319 in words is "two hundred twelve million, five hundred twenty-two thousand, three hundred nineteen".