212022225 has 24 divisors (see below), whose sum is σ = 389493920. Its totient is φ = 113078160.

The previous prime is 212022191. The next prime is 212022227. The reversal of 212022225 is 522220212.

212022225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212022225 - 2⁹ = 212021713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212022198 and 212022207.

It is not an unprimeable number, because it can be changed into a prime (212022227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 156379 + ... + 157728.

Almost surely, 2^212022225 is an apocalyptic number.

212022225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212022225 is a deficient number, since it is larger than the sum of its proper divisors (177471695).

212022225 is a wasteful number, since it uses less digits than its factorization.

212022225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314126 (or 314115 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 212022225 is about 14560.9829681928. The cubic root of 212022225 is about 596.2940317943.

Adding to 212022225 its reverse (522220212), we get a palindrome (734242437).

The spelling of 212022225 in words is "two hundred twelve million, twenty-two thousand, two hundred twenty-five".