212500377 has 6 divisors (see below), whose sum is σ = 306945002. Its totient is φ = 141666912.

The previous prime is 212500369. The next prime is 212500403. The reversal of 212500377 is 773005212.

It can be written as a sum of positive squares in only one way, i.e., 196532361 + 15968016 = 14019^2 + 3996^2 .

It is not a de Polignac number, because 212500377 - 2³ = 212500369 is a prime.

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 212500377.

It is not an unprimeable number, because it can be changed into a prime (212500307) 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 5 ways as a sum of consecutive naturals, for example, 11805568 + ... + 11805585.

Almost surely, 2^212500377 is an apocalyptic number.

It is an amenable number.

212500377 is a deficient number, since it is larger than the sum of its proper divisors (94444625).

212500377 is a wasteful number, since it uses less digits than its factorization.

212500377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23611159 (or 23611156 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 212500377 is about 14577.3926681008. The cubic root of 212500377 is about 596.7419488601.

Adding to 212500377 its reverse (773005212), we get a palindrome (985505589).

The spelling of 212500377 in words is "two hundred twelve million, five hundred thousand, three hundred seventy-seven".