212244225 has 12 divisors (see below), whose sum is σ = 350910576. Its totient is φ = 113196880.

The previous prime is 212244217. The next prime is 212244233. The reversal of 212244225 is 522442212.

It is an interprime number because it is at equal distance from previous prime (212244217) and next prime (212244233).

It is not a de Polignac number, because 212244225 - 2³ = 212244217 is a prime.

It is a super-2 number, since 2×212244225² = 90095222091701250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212244195 and 212244204.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1414887 + ... + 1415036.

It is an arithmetic number, because the mean of its divisors is an integer number (29242548).

Almost surely, 2^212244225 is an apocalyptic number.

212244225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212244225 is a deficient number, since it is larger than the sum of its proper divisors (138666351).

212244225 is a wasteful number, since it uses less digits than its factorization.

212244225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2829936 (or 2829931 counting only the distinct ones).

The product of its digits is 2560, while the sum is 24.

The square root of 212244225 is about 14568.6040854984. The cubic root of 212244225 is about 596.5020777505.

Adding to 212244225 its reverse (522442212), we get a palindrome (734686437).

The spelling of 212244225 in words is "two hundred twelve million, two hundred forty-four thousand, two hundred twenty-five".