212225570 has 8 divisors (see below), whose sum is σ = 382006044. Its totient is φ = 84890224.

The previous prime is 212225557. The next prime is 212225579. The reversal of 212225570 is 75522212.

212225570 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 208426969 + 3798601 = 14437^2 + 1949^2 .

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

It is not an unprimeable number, because it can be changed into a prime (212225579) 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, 10611269 + ... + 10611288.

Almost surely, 2^212225570 is an apocalyptic number.

212225570 is a deficient number, since it is larger than the sum of its proper divisors (169780474).

212225570 is a wasteful number, since it uses less digits than its factorization.

212225570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21222564.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 212225570 is about 14567.9638247766. The cubic root of 212225570 is about 596.4846009149.

Adding to 212225570 its reverse (75522212), we get a palindrome (287747782).

The spelling of 212225570 in words is "two hundred twelve million, two hundred twenty-five thousand, five hundred seventy".