212225535 has 128 divisors (see below), whose sum is σ = 436838400. Its totient is φ = 97044480.

The previous prime is 212225513. The next prime is 212225551. The reversal of 212225535 is 535522212.

212225535 is a `hidden beast` number, since 2 + 122 + 2 + 5 + 535 = 666.

It is not a de Polignac number, because 212225535 - 2⁷ = 212225407 is a prime.

It is a super-3 number, since 3×212225535³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 212225499 and 212225508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1351677 + ... + 1351833.

It is an arithmetic number, because the mean of its divisors is an integer number (3412800).

Almost surely, 2^212225535 is an apocalyptic number.

212225535 is an abundant number, since it is smaller than the sum of its proper divisors (224612865).

212225535 is a wasteful number, since it uses less digits than its factorization.

212225535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238 (or 232 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 212225535 is about 14567.9626235105. The cubic root of 212225535 is about 596.4845681244.

Adding to 212225535 its reverse (535522212), we get a palindrome (747747747).

The spelling of 212225535 in words is "two hundred twelve million, two hundred twenty-five thousand, five hundred thirty-five".