211205265 has 32 divisors (see below), whose sum is σ = 346809600. Its totient is φ = 109714176.

The previous prime is 211205261. The next prime is 211205341. The reversal of 211205265 is 562502112.

It is a happy number.

211205265 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 211205265 - 2² = 211205261 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211205261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117564 + ... + 119346.

It is an arithmetic number, because the mean of its divisors is an integer number (10837800).

Almost surely, 2^211205265 is an apocalyptic number.

It is an amenable number.

211205265 is a deficient number, since it is larger than the sum of its proper divisors (135604335).

211205265 is a wasteful number, since it uses less digits than its factorization.

211205265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 211205265 is about 14532.9028414835. The cubic root of 211205265 is about 595.5271697270.

Adding to 211205265 its reverse (562502112), we get a palindrome (773707377).

The spelling of 211205265 in words is "two hundred eleven million, two hundred five thousand, two hundred sixty-five".