212013202225 has 18 divisors (see below), whose sum is σ = 288968742230. Its totient is φ = 154191417600.

The previous prime is 212013202223. The next prime is 212013202307. The reversal of 212013202225 is 522202310212.

It can be written as a sum of positive squares in 3 ways, for example, as 41430159936 + 170583042289 = 203544^2 + 413017^2 .

It is not a de Polignac number, because 212013202225 - 2¹ = 212013202223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212013202196 and 212013202205.

It is not an unprimeable number, because it can be changed into a prime (212013202223) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 35040480 + ... + 35046529.

Almost surely, 2^212013202225 is an apocalyptic number.

212013202225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212013202225 is a deficient number, since it is larger than the sum of its proper divisors (76955540005).

212013202225 is a wasteful number, since it uses less digits than its factorization.

212013202225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70087041 (or 70087025 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 212013202225 its reverse (522202310212), we get a palindrome (734215512437).

The spelling of 212013202225 in words is "two hundred twelve billion, thirteen million, two hundred two thousand, two hundred twenty-five".