207712212257 has 32 divisors (see below), whose sum is σ = 230801356800. Its totient is φ = 185361120000.

The previous prime is 207712212241. The next prime is 207712212269. The reversal of 207712212257 is 752212217702.

It is a cyclic number.

It is not a de Polignac number, because 207712212257 - 2⁴ = 207712212241 is a prime.

It is a super-3 number, since 3×207712212257³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 207712212257.

It is not an unprimeable number, because it can be changed into a prime (207712212557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 141204032 + ... + 141205502.

It is an arithmetic number, because the mean of its divisors is an integer number (7212542400).

Almost surely, 2^207712212257 is an apocalyptic number.

It is an amenable number.

207712212257 is a deficient number, since it is larger than the sum of its proper divisors (23089144543).

207712212257 is a wasteful number, since it uses less digits than its factorization.

207712212257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2585.

The product of its (nonzero) digits is 54880, while the sum is 38.

Adding to 207712212257 its reverse (752212217702), we get a palindrome (959924429959).

Subtracting 207712212257 from its reverse (752212217702), we obtain a palindrome (544500005445).

The spelling of 207712212257 in words is "two hundred seven billion, seven hundred twelve million, two hundred twelve thousand, two hundred fifty-seven".