212225371 has 4 divisors (see below), whose sum is σ = 213845544. Its totient is φ = 210605200.

The previous prime is 212225359. The next prime is 212225401. The reversal of 212225371 is 173522212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212225371 - 2⁷ = 212225243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212225311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 809890 + ... + 810151.

It is an arithmetic number, because the mean of its divisors is an integer number (53461386).

Almost surely, 2^212225371 is an apocalyptic number.

212225371 is a deficient number, since it is larger than the sum of its proper divisors (1620173).

212225371 is a wasteful number, since it uses less digits than its factorization.

212225371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620172.

The product of its digits is 1680, while the sum is 25.

The square root of 212225371 is about 14567.9569947196. The cubic root of 212225371 is about 596.4844144773.

Adding to 212225371 its reverse (173522212), we get a palindrome (385747583).

The spelling of 212225371 in words is "two hundred twelve million, two hundred twenty-five thousand, three hundred seventy-one".